What does the error es mean on the air conditioner. Common air conditioner error codes. Error codes Kentatsu KSKT-HF channel type
Error codes for air conditioners allow the service engineer to quickly find and efficiently fix faults.
Air conditioner diagnostics
This is the first thing to do before servicing or repairing it. Diagnostics of the air conditioner allows you to identify breakdowns and malfunctions in the system. Whether it is a lack of refrigerant that needs to be replenished, errors in the operation of the air conditioner, or malfunctions of the main components.
Timely and competent diagnostics of malfunctions will allow the service engineer to quickly and efficiently eliminate malfunctions. So, to return a healthy microclimate to the client's home or office.
All modern air conditioners have a developed self-diagnosis system. As a result of analyzing the state of the equipment, the system identifies the cause of the malfunction and displays the error code on the display (of the remote control, board or mode indicator). Below are the error codes of air conditioners (alarm code) of various brands. Using this information, you can independently read the error code and repair the air conditioner. This will significantly save the time of equipment diagnostics and avoid inaccuracies in determining the nature and location of the breakdown.
Air conditioner error codes
We have selected for you information about error codes for air conditioners and split systems of different brands.
If you need an authorized service center for air conditioner repair - it's for us! EUROBUSINESS is your reliable partner!
Error codes for Beko BKN, AKN air conditioners
⊕ - blinking, 2 - on, 3 - off. If there are these errors, the operation of the air conditioner will be automatically terminated.
Error codes for Beko AKH, AKP, AS, BKH, BKP, BS air conditioners
Error codes for Beko inverter air conditioners BKC 090 INV, BKC 120 INV, BKL090 INV, BKL120 INV
If the BEKO air conditioner does not work, this is for us!
Error codes for Carrier air conditioners
If a malfunction is detected, the green indicator (P) and the orange indicator (R) flash at a frequency of 0.1 seconds, indicating a fault code. It should be noted that the orange indicator (R) corresponds to the tens in the number - the fault code. The green indicator (P) corresponds to the units in the number - the fault code.
There are 2 seconds between blinking orange and green indicators. The sequence is repeated at intervals of 4 seconds.
For example, fault code 13. Orange light blinks once, both lights are off for 2 seconds, green light flashes three times at 0.5 second intervals, both lights are off for 4 seconds.
The sequence is repeated until the fault is corrected. If the fault code is less than 10, then the orange indicator does not blink.
| The code | Description |
| 2 | Room temperature sensor malfunction |
| 3 | Malfunction of the temperature sensor of the internal heat exchanger Tc |
| 6 | Malfunction of the reversing valve of the outdoor unit |
| 8 | Malfunction of the fan motor in the indoor unit |
| 9 | Power is not supplied to the indoor unit |
| 11 | Malfunction drainage pump or other drainage problems |
| 12 | Error in indoor unit software (wrong addressing) |
| 13 | Configuration error |
| 14 | Loss of central control signal |
| 15 | Malfunction of the indoor heat exchanger temperature sensor Tcj |
| 18 | Malfunction of the outdoor unit control unit (G-Tr short circuit protection) |
| 20 | Error in block position recognition circuit |
| 21 | Malfunction of the current sensor in the outdoor unit |
| 22 | Malfunction of the outdoor heat exchanger temperature sensor |
| 23 | Discharge temperature sensor malfunction |
| 24 | Outdoor unit fan failure |
| 26 | Other outdoor unit malfunction |
| 27 | Outdoor unit compressor blocked |
| 27 | Invalid discharge temperature |
| 29 | Outdoor unit compressor failure |
| 31 | Increased pressure in the circuit of the outdoor unit |
If the CARRIER air conditioner does not work, this is for us!
Error codes for Chigo air conditioners
If the CHIGO air conditioner does not work, this is for us!
Error codes for Daewoo air conditioners
| Error code | Cause of malfunction |
| F6 | PG motor faults |
| F7 | Indoor TEMP sensor faults |
| F8 | Indoor coil pipe TEMP sensor faults |
| F9 | Outdoor coil pipe TEMP sensor faults |
If the Daewoo air conditioner does not work, this is for us!
Error codes for Fujitsu General air conditioners
Fujitsu General Ltd. introduced to the market a new product for diagnostics of split systems and multi-split systems GENERAL. The tool is a set of adapters connecting outdoor unit with a computer, and a PC program. With their help, a specialist conducting equipment diagnostics can see in real time the parameters of the compressor, fan motor, EEV, sensor readings, as well as an error log. In the process of testing, it is possible to record a work log with the issuance of a report.
The adapter is suitable for working with multi-split systems, as well as with most inverter split systems(wall, ceiling, channel, cassette).
Modern Fujitsu General air conditioners have a very advanced self-diagnosis system, according to the results of which the control system, when a particular malfunction is detected, blocks the operation of the entire device and at the same time reports the cause of the malfunction.
The Fujitsu General air conditioner control system reports any malfunctions by flashing an LED on the panel of the indoor (in some cases outdoor) unit. When a particular malfunction of the air conditioner is detected, the LEDs light up or flash in a certain sequence, which corresponds to the detected error. If the air conditioner control system has detected more than one error, then the malfunction with the highest priority is displayed first, and then all the others.
Error codes for Fujitsu General air conditioners are shown in the table.
| Cause of malfunction | Error display | ||
| OPERATION (red) | TIMER (green) | SWING (orange) | |
| Indoor unit board failure | O | O | - |
| Room temperature sensor wire open (indoor unit) | 2 X | O | - |
| Short circuit in the room temperature sensor circuit (indoor unit) | 2 X | O | O |
| Indoor unit piping sensor wire open | 3 X | O | - |
| Short circuit in the indoor unit piping sensor circuit | 3 X | O | O |
| Faulty indoor unit fan | 6 X | O | - |
For some models (see list *), depending on the error, the OPERATION, TIMER, SWING indicators work according to following principle: O- fast blinking; X- slow blinking; - OFF
* Indoor Unit: ASG18FBAJ, ASG18FBBJ, ASG18UBAJ, ASG18UBBJ, ASG24FBBJ, ASG30FBBJ, ASG18FBBX, ASG18UBBN, ASG24FBBN, ASG24UBBN, AWG18FBAJ, AWG18FBBJ, AWG18UBAJ, AWG18UBBJ, AWG24FBBJ, AWG24UBBJ, AWG30FBBJ, AWG30UBBJ, AWG14UBBJ, ABG14FBBJ, ABG14FBBJ, ABG18FBBJ, ABG18FBBJ, ABG181BBJ, ABG181BBJ, ABG24FBBJ, ABG24FBBJ, ABG241BBJ, ABG241BBJ, AWG24FBAJ, AWG24UBAJ.
* External power: AOG18FNAK, AOG18FNBK, AOG18UNAKL, AOG18UNBKL, AOG24FNBK, AOG24UXBKL, AOG30UNBDL, AOG18FNBX, AOG18UXBXL, AOG24FXBX, AOG24UXBXL, AOG18FNAK, AOG18FXBK, AOG18UNAKL, AOG18UXBKL, AOG24FNBK, AOG24UXBKL, AOG30FNBDL, AOG30UNBDL, AOG14USBJ, AOG14FNBK, AOG14FXBX, AOG18FNBK, AOG18FXBX, AOG18UXBKL, AOG18UNBNL, AOG24FNBK, AOG24FXBX, AOG241XBKL, AOG24UXBXL, AOG24FXAD, AOG24UXADL
If the Fujitsu General air conditioner does not work, this is for us!
Error codes for Haier air conditioners
Repair of air conditioners HAIER (HAYER) is carried out on the basis of an analysis of the operating parameters of devices and fault codes.
If there are no errors or malfunctions, but the unit does not start, the start conditions may not be as required. In this case, the following standby codes will be displayed on the display of the head unit:
Error codes and malfunctions of indoor units of HAIER air conditioners
| Remote display indication | Number of flashes LED5 / Timer | Description of the fault |
| 01 | 1 | Tai Ambient Temperature Sensor Malfunction |
| 02 | 2 | Malfunction of the temperature sensor of the heat exchanger TC1 |
| 03 | 3 | Malfunction of the temperature sensor of the heat exchanger TC2 |
| 04 | 4 | Dual Energy Source Temperature Sensor Malfunction |
| 05 | 5 | Indoor unit board EEPROM error |
| 06 | 6 | No communication between indoor and outdoor units |
| 07 | 7 | Lack of communication between indoor unit and wired remote control |
| 08 | 8 | Condensate drain error |
| 09 | 9 | Duplicate indoor unit address |
| 0A | 10 | Duplicate indoor unit central address |
| Fault codes for outdoor unit | 20 | Corresponding malfunction of the outdoor unit |
Error codes and malfunctions of the inverter outdoor unit
| Remote display indication | Error code | Description of the fault |
| 20-0 | Frost protection sensor t error TE1 | AD value is less than 11 (loop open) or greater than 1012 (loop closed) for more than 60 seconds. in cooling mode, if the sensor is faulty, the unit does not use its readings, except for the defrost function or for 3 minutes. after its completion; no alarm |
| 20-1 | Frost protection t sensor error TE2 | |
| 21 | Outside air temperature sensor error Ta | |
| 22 | Suction temperature sensor error Ts | AD value is less than 11 (loop open) or greater than 1012 (loop closed) for more than 60 seconds. in defrost mode or for 3 min. after its completion; there is no alarm. |
| 23 | Discharge temperature sensor error Td | After 5 minutes of compressor operation, the AD value is less than 11 (open circuit) or greater than 1012 (closed circuit) for more than 60 seconds. during start-up, in defrost mode or for 3 min. after its completion; no alarm |
| 24 | Toil oil temperature sensor error | AD value is less than 11 (loop open) or greater than 1012 (loop closed) for more than 60 seconds, (loop closed) for 60 seconds; if within 5 minutes Ta 2 -10°C or ET< -10®С, сигнала тревоги нет. |
The tables show only some of the HAIER air conditioner trouble codes. We remind you that HAIER air conditioners are technically sophisticated equipment. Error codes are provided for qualified and certified technicians. That is, for those who are professionally engaged in the repair of HAIER air conditioners, and not for ordinary users. Trust the repair of HAIER air conditioners to professionals.
If the Haier air conditioner does not work, this is for us!
Hisense Air Conditioner Error Codes
If a malfunction occurs, press the Sleep button on the remote control 4 times, the error code will light up on the 7-segment display (see table below). If there are several errors, then press the Sleep button 4 times again - the LED indicator will light up with the following error code.
Updated remote remote control, which has 4 modes of operation of the Sleep button, allows you to set 4 different combinations. When using it to check error codes, you must press the "Sleep" button 10 times. After that, error codes will start to be displayed.
| The code | Cause of malfunction |
| 1 | Outdoor heat exchanger temperature sensor error |
| 2 | Compressor discharge temperature sensor error |
| 5 | Integral Power Module (IPM) protection trip |
| 6 | Operation of the overvoltage or undervoltage protection device in the AC mains |
| 7 | Communication error between indoor and outdoor units |
| 8 | Overload protection device |
| 10 | Communication error between two microcircuits (control and drive) in a printed |
| 11 | Outdoor unit EEPROM memory error |
| 12 | Tripping of the protection device when low temperatures outside air |
| 13 | Tripping of the safety device as a result of excessive temperature in |
| 14 | Outside air temperature sensor error |
| 15 | Compressor thermal protection trip due to overheating |
| 16 | Operation of the heat exchanger frost protection or overload protection device when the indoor unit is operating in heating mode |
| 17 | Compensation device reactive power(PFC) |
| 18 | Compressor start error direct current |
| 19 | Compressor drive error |
Error codes for IGC air conditioners
IMS MINI (IMS-EM080NH, IMS-EM100NH, IMS-EM120NH, IMS-EM140NH, IMS-EM160NH)
| The code | Malfunction |
| CH | Liquid pipe thermistor failure |
| CJ | Temperature sensor malfunction |
| E6 | Suction tube temperature protection frequency limits "TS" |
| E7 | External condenser average temperature protection frequency limits |
| E8 | Protective stop of external capacitor |
| E9 | Compressor Frequency Limits for Extreme High Temperature |
| F4 | Low pressure sensor problems |
| F5 | Low Pressure Transmitter Protection Limits for Ultra High or Ultra Low Frequency |
| F6 | Low pressure safety shutdown for ultra-high or ultra-low frequency |
| H8 | Constant frequency compressor overcurrent protection 1 |
| H9 | Constant frequency compressor overcurrent protection 2 |
| ON THE | Input voltage overvoltage and undervoltage protection |
| NS | Incorrect phase sequence of fixed frequency compressor 1 |
| HH | Incorrect phase sequence of the compressor frequency converter |
| HJ | Wrong phase sequence of fixed frequency compressor 2 |
| J4 | Communication error with control panel and fan motor |
| J5 | Error setting the address or load settings of the outdoor unit |
| 38 | Radiator temperature protection frequency limits |
| 39 | Radiator shutdown |
| 3A | DC fan protection |
| 3C | DC fan surge protection |
| 3H | Power on error or asynchronous fan operation |
| 3J | DC fan surge protection |
Error codes for Kentatsu air conditioners
Error codes Kentatsu KSVP-HF
E2 - sensor malfunction room temperature
EЗ - malfunction of the evaporator temperature sensor
E4 - malfunction of the temperature sensor of the outdoor unit
E6 - outdoor unit malfunction
E7 - EEPROM error
E8 - excess water level
Error codes Kentatsu KSKT-HF channel type
E0 - Faulty room temperature sensor
E1 - Faulty evaporator temperature sensor
E2 - Faulty outdoor unit temperature sensor
E3 - outdoor unit defective
E4 - faulty drain pump temperature sensor
E5 - EEPROM error
E6 - rising water level
Error codes Kentatsu KSFU models: KSFU/KSRU76HFDN3, KSFU/KSRU140HFDN3
P4 - thermal protection of the evaporator of the indoor unit
P5 - thermal protection of the capacitor of the external unit
P9 - protection of the defrost function or creation of a comfortable air flow
E1 - open or short circuit in the temperature sensor circuit T1
E6 - outdoor unit protection
Error Codes Kentatsu KSGH/KSRH
Models: KSGH/KSRH21CFDN1 KSGH/KSRH26CFDN1, KSGH/KSRH35CFDN1 KSGH/KSRH53CFDN1, KSGH/KSRH21HFDN1 KSGH/KSRH26HFDN1, KSGH/KSRH35HFDN1
E1 - EEPROM error (non-volatile memory on the board)
E2 - zero crossing error
EЗ - abnormal fan speed
E4 - compressor current protection tripped 4 times
E5 - indoor air temperature sensor shorted / broken
E6 - evaporator temperature sensor shorted / broken
Kentatsu Error Codes floor type KSFU70XFAN1 /KSRU70HFAN1, KSFU120XFAN3 / KSRU120HFAN3
P4 - evaporator temperature protection
P5 - condenser temperature protection
P7 - Discharge temperature too high. Compressor protection enabled
P9 - too low outdoor temperature, when it rises, the protection will turn off automatically
P10 - outlet pressure protection
P11 - suction pressure protection
P12 - overcurrent protection
E1 - indoor air temperature sensor T1 shorted / broken
E2 - evaporator temperature sensor T2 shorted / open
E3 - T3 condenser temperature sensor short/open
E4 - outdoor temperature sensor closed T4 shorted / broken
E5 - communication between the indoor and outdoor units is broken
E6 - outdoor unit protection
E10 - compressor suction pressure error
E13 - compressor phase error
E14 - incorrect compressor phasing
HS - start defrost
If the Kentatsu air conditioner does not work, this is for us!
Error codes for LG air conditioners
| The code | Cause of malfunction |
| F01 | Open / short circuit room room (air) temperature sensor of the indoor unit |
| F02 | Open/short circuit of the pipe temperature sensor of the indoor unit |
| F03 | Lack of communication between the control panel and the main control board for more than 2 minutes |
| F04 | Open / short pipe temperature sensor of the outdoor unit |
| F05 | Open / short circuit room air temperature sensor of the outdoor unit |
| CH01 | Malfunction of one of the thermistors of the board (break or short circuit) of the indoor, wall-mounted unit of the split system - control of the temperature of the incoming air and the tube of the gas circuit of the air conditioner |
| CH02 | Malfunction of one of the thermistors (break or short circuit) of the outdoor unit: inlet air temperature sensor or gas circuit pipe temperature sensor |
| CH03 | The air conditioner works simultaneously for heating and cooling the air |
| CH04 | Compressor overload protection system included |
| CH05 | Communication error between the indoor and outdoor units of the split system |
| CH06 | The current consumption of one or more actuators of the outdoor unit-relay was briefly above the norm |
| CH07 | The current consumption of the entire outdoor unit has been above normal for a long time |
| CH08 | Fan motor failure |
| CH09 | 4-way valve malfunction |
| CH10 | The thermistor for controlling the temperature of the compressor housing of the split system is faulty (open or short circuit) |
LGMV is a mobile application developed by the manufacturer for remote monitoring of operating parameters of LG air conditioning systems. The application helps engineers assess the current state of equipment. The analysis is based on a multi-year operation cycle. The program helps not only to quickly identify problems in the system, but also gives recommendations for resolving the issue.
The LGMV diagnostic system provides monitoring of system operating parameters, prevention and prevention of system malfunctions. All this certainly simplifies diagnostics and commissioning. LGMV consists of a wireless communication module and a free smartphone app. To use the LGMV mobile application, an exclusive Bluetooth module is required, the corresponding connector of which must be connected to the CN-LGMV port on the main board of the outdoor unit.
LGMV main features:
Visual display of key information about the operation of the air conditioner.
Graphic indication of pressure and other parameters.
Controls the operation mode of the indoor units when the unit is connected to the outdoor unit.
Saving data on the operation of the air conditioner as a file.
Operation report — the result of the testing operation is generated into an HTML document.
Error number indication and support for error search in the list from PDF document.
Mobile LGMV can be downloaded, for example, from Google Play as a product of LG Electronics, Inc. as a tool for Maintenance, troubleshooting for LG air conditioning systems. Mobile app LGMV uses a limited resource on a smartphone and processes data in real time. Data monitoring may be difficult or data may not be fully saved if the performance of the smartphone is poor.
It is recommended to use a high performance smartphone. If system resources are insufficient due to other Internet applications that are enabled, data monitoring may fail in addition to monitoring. The monitoring function and saving function may not work in in full. And also Bluetooth communication connection can be disabled. In addition, the application may be disabled due to a lack of resources or an unexpected error.
The communication level may increase depending on the number of outdoor and indoor units. Bluetooth transmission distance can be shortened to the point of turning off data transmission depending on the weather or conditions environment (electromagnetic waves or obstacle), etc. It is recommended to use the Bluetooth module for a short distance.
If the LG air conditioner does not work, this is for us!
Error codes for MDV air conditioners
Error indication on MDV indoor unit
If you need diagnostics of the MDV air conditioner - this is for us!
Error indication on outdoor unit MDV
| E0 | eeprom error |
| E1 | Error on the temperature sensors of the indoor unit 1 |
| E2 | Error on the temperature sensors of the indoor unit 2 |
| E3 | Error on the temperature sensors of the indoor unit 3 |
| E4 | Outdoor unit temperature sensor error |
| E5 | High or low voltage protection |
| E6 | Error on the temperature sensors of the indoor unit 4 |
| E7 | No communication between control and inverter boards |
| P0 | Compressor overheating protection |
| P1 | High pressure protection - M4OCi only |
| P2 | Protection by low pressure- only for M4OCi |
| P3 | Compressor overcurrent protection |
| R4 | Inverter module protection tripped |
| R5 | Low outdoor temperature protection -7°C |
| P6 | High condensing temperature protection |
If the MDV air conditioner does not work, this is for us!
Mitsubishi Electric Air Conditioner Error Codes
If the Mitsubishi Electric air conditioner does not work, this is for us!
Mitsubishi Heavy Air Conditioner Error Codes
If the Mitsubishi Heavy air conditioner does not work, this is for us!
Error codes for Wisnow air conditioners
If the Wisnow air conditioner does not work, this is for us!
Error codes for Polaris air conditioners
If the Polaris air conditioner does not work, this is for us!
Sanyo Air Conditioner Error Codes
Description of the malfunctions that are indicated on the board of the SANYO W-ECO MULTI SYSTEM outdoor unit. Valid for SPW-CR1503GDYH8, SPW-CR1903GDYH8, SPW-CR703GDCH8, SPW-CR903GDCH8, SPW-C1503GDYH8, SPW-C1903GDYH8, SPW-C703GDCH8, SPW-C903GDCH8.
If the Sanyo air conditioner does not work, this is for us!
Sharp Air Conditioner Error Codes
For example, fault indication in SHARP air conditioners models AY-A184E / AE-A184E, AY-A244E / AE-A244E.
If the Sharp air conditioner does not work, this is for us!
Error codes for Toshiba air conditioners
| The code | Malfunction |
| 00-0s | indoor air temperature sensor error or indoor unit board error |
| 00-0d | error of the temperature sensor of the radiator or control board |
| 00-11 | defective board or fan motor |
| 00-12 | need to replace control board |
| 01-04 | fuses on the board burned out, incorrect interconnection, board burned out |
| 01-05 | inverter board error |
| 02-14 | inverter overcurrent |
| 02-16 | short circuit between compressor windings |
| 02-17 | current sensor error |
| 02-18 | error of temperature sensors, PC board |
| 02-19 | TD temperature sensor error, PC board |
| 02-1a | outdoor unit fan error - overcurrent, blocked, burnt motor or board |
| 02-1b | condenser temperature sensor defective or board |
| 02-1c | compressor did not start within 20 seconds |
| 03-07 | lack of refrigerant, inverter board error |
| 03-1d | defective compressor |
| 03-1e | suction tube sensor error TD, not enough refrigerant |
| 03-1f | compressor does not work due to supply voltage, overload of the refrigeration circuit |
| 03-08 | four-way valve malfunction |
If the Toshiba air conditioner does not work, this is for us!
The work performed during the diagnostics corresponds to the work performed during. The only difference is that during the diagnostics, all the main parameters of the equipment operation are checked and recorded, and during the service, the identified deviations from the norm are eliminated.
The list of works in the diagnosis of air conditioning
During the diagnosis of the air conditioner, firstly, an external examination is carried out for the absence of mechanical damage. Not only hull, but also hydraulic and electrical parts of the equipment are inspected. In addition, the reliability of the fasteners of the external and internal units is checked. As well as the quality of the clamps of all contact connections of electrical equipment. Before turning on the equipment, it is necessary to check the condition of the air filters. They must be not only clean, but also without damage. After inspection, as a rule, switching to the "cooling" mode is performed. Use the remote control to test the system.
During the functional test, the indication of the air conditioner modes is evaluated, as well as the operation of the mechanically driven exit blinds. One of the indirect indicators of the efficiency of the system is the control of the temperature of dry air at the inlet and outlet of the evaporator. With the help of pressure gauges, the average suction / discharge pressure is measured (with free access to the outdoor unit). Of course, it is mandatory to check the tightness of the connection between the indoor and outdoor units. In addition, you need to make sure that there are no leaks in the drainage system of the air conditioner.
If something went wrong
The specialist can also judge the nature of the malfunction by the “behavior” of the air conditioner. For example, if the air conditioner turns on and immediately turns off, after which an error message is displayed - most likely, the matter is in the sensors (malfunction of the air temperature sensors or the evaporator).
If the air conditioner turns on, runs for 15-20 seconds, and then turns off, the indoor unit fan motor is most likely defective (rotation speed is lower than the set rpm).
If the air conditioner does not turn on at all and at the same time all the LEDs flash (or do not light up), most likely, the control circuit board has failed.
Simultaneous flashing of all indicator lamps of the air conditioner, as a rule, means only a failure of the program settings of the control board. Most likely, this is due to the non-compliance with the GOSTs of the network parameters, for example, due to a power surge in the network. It is not difficult to eliminate this malfunction - it is enough just to reprogram the main control board. Since information about codes is provided only to authorized service centers, in this case it is necessary to contact our specialists.
Before…
If your air conditioner does not work, first of all make sure that the air conditioner is securely connected to the outlet. Check circuit breaker or fuse on the supply line, if necessary, restart the machine or replace the fuse. Read the user manual again and make sure all modes are set correctly.
Doing it yourself will save you money. Because in many cases the engineer you called, after doing what you can easily do yourself, will charge you for the false call.
If these steps do not help, then contact the sales organization that sold you the air conditioner. Or contact an authorized service center of the air conditioner manufacturer. Without a doubt, this is the best, fastest and most reliable way to get your air conditioner back up and running. The sales organization that sold the air conditioner should give you information on how to contact them. This information is available not only in the warranty card, but also on the manufacturer's website in the appropriate regional section.
Air conditioner test mode
To facilitate diagnostics, modern air conditioners have a so-called test mode. Compared to the operating mode, the air conditioner turns on in cooling mode and does not respond to sensor readings and air temperature. That is, in the test mode, the air conditioner will function as long as it is necessary for the service engineer to study the operation of the system units. After turning off the test mode, the air conditioner will return to normal operation.
Samsung air conditioners also have a test mode. To enter the test mode, press the on / off button on the indoor unit and hold it for five seconds. In this case, the temperature indicator displays the installed program settings option at a second interval, for example, 0b0000-1730F8: 0b00001730F80b (only for models with a temperature indicator).
When testing the operation of the air conditioner, the cooling mode is switched on with the following restrictions:
- The compressor is forced to run in cooling mode without turning on/off according to the set internal temperature, without defrosting mode;
- The blade directing the air flow up / down - in the mode of turning up and down;
- The indoor fan rotates at high speed.
Error codes for Baloo air conditioners are required in order to timely identify the malfunction and contact the master to fix it. It should be noted that in some cases the slightest delay becomes critical, so it is better to monitor the appearance of information on the scoreboard.
True, the errors of Baloo air conditioners directly depend on the series. After all, the equipment differs in software, which means that it informs a person about malfunctions in different ways. So, you should consider all possible codes depending on the series.
Mistakes on the example of Ballu MFS2
Errors of air conditioners Baloo series MFS2:
- E1, E2, E3, E4 - Ballu air conditioner error, indicating that the temperature sensor was broken or shorted;
- E6 shows the emergency activation of the protection of the outdoor unit;
- E8 - Ballu air conditioner error, requiring cleaning of the electrostatic filter;
- P4 - the compressor automatically turned off, as an error appeared on the evaporator sensor, which occurs when the temperature threshold is overcome;
- P5 - this error code air conditioner Ballu shows when an error occurs on the condenser sensor;
- P6 will prompt that the defrosting process has started automatically.
The number of codes shows how much information a person receives about the operation of his own equipment.
Accordingly, he can turn to specialists at the right time.
Below is the most complete list of error codes and malfunctions encountered in this technique in general.
Errors air conditioner Balu series BSC, BR, BV
- E1, this air conditioner error code is displayed when the indoor air temperature sensor does not work properly;
- E2 - evaporator temperature sensor error;
- E5 indicates that an error occurred in the outdoor unit, which led to the automatic activation of the protection mode;
- E6 are Baloo air conditioner errors showing a malfunction of the fan motor in the indoor unit.
It is immediately clear that the last three series have a much smaller number of codes. On the one hand, this shows how stable models are considered. On the other hand, the user receives less information, which often leads to difficult situations and additional diagnostics of cassette air conditioner models.
Air conditioner error codes are useful information that appears on the equipment screen. If you correctly recognize them, you will be able to find out exactly which malfunction should be fixed. Because of this, maintenance takes a minimum of time, which means that the owner does not have to suffer from a lack of equipment.
MDV air conditioners have a self-diagnostic system. This means that in the event of a malfunction, the air conditioner issues an error code. By the error code of the MDV air conditioner, it is quite easy to identify the problem.
This page lists different types of MDV hardware error codes:
ERROR CODES FOR HOUSEHOLD SPLIT SYSTEMS MDV
AURORA Series (MDSA)
| Display | Error value |
| E0 | |
| E1 | EEPROM read error, indoor unit |
| E3 | No indoor unit fan control |
| E4 | Error on temperature sensor T1 (Troom) |
| E5 | Error on sensor T2 (boiling) |
| EU | Refrigerant leak |
| F1 | Error on the T4 sensor (Outdoor block, Outside) |
| F2 | Error on the TK sensor (Nar.blok, Tcondensation) |
| F3 | Error on the T5 sensor (Nar.blok, Injection) |
| F4 | EEPROM read error, outdoor unit |
| F5 | No outdoor unit fan control |
| P0 | IPM failure or overcurrent |
| P1 | Supply voltage too low or too high |
| R2 | Compressor overheating |
| R4 | Inverter module error |
FAIRWIND Series (MDSF)
| LED operation | LED Timer | Display | Error Code Meaning |
| Flashing 1 time | Off | E1 | |
| Flashes 2 times | Off | E2 | Signal transition control error through 0 |
| Flashes 3 times | Off | E3 | |
| Flashes 5 times | Off | E5 | Thermistor error T1 indoor unit (air sensor) |
| Flashes 6 times | Off | E6 | Indoor unit T2 thermistor error (pipe sensor) |
| Flashes 7 times | Off | E7 | Outdoor unit TC thermistor error (24 and 28 kBTU only) |
| Flashes 2 times | Glows | EU | Refrigerant leak detected |
| Flashes 8 times | Off | E8 | reserve |
| Flashes 9 times | Off | E9 | Interconnect Error (24 and 28 kBTU only) |
Note: Depending on the model of the air conditioner, the error code may be displayed on the digital display or on the mode display LEDs.
ERROR CODES OF MULTI-SPLIT SYSTEMS MDV
Free Match outdoor units (MD*O-**HFN1)
| Display | Error value |
| E0 | EEPROM checksum read error |
| E2 | Interconnect error |
| E3 | Communication error "control board - inverter board" |
| E4 | Outdoor unit temperature sensor error |
| E5 | |
| E8 | Outdoor unit fan speed control error |
| F1 | Indoor unit A thermistor error |
| F2 | Indoor unit B thermistor error |
| F3 | Indoor unit With thermistor error |
| F4 | Indoor unit D thermistor error |
| F5 | Indoor unit E thermistor error |
| P1 | P protection high (MD40-28HFN1, MD40-36HFN1, MD50-42HFN1) |
| R2 | P protection low (MD40-28HFN1, MD40-36HFN1, MD50-42HFN1) |
| RZ | Compressor current protection |
| R4 | Protection for high discharge T |
| R5 | Compressor overheating |
| R6 | Inverter module failure |
| LP |
Note: all error codes are automatically erased after 30 seconds after the error has been eliminated / disappeared, except for E2 / E3.
Indoor units of wall-mounted, duct and cassette types
Designations:
O-glows;
X-off;
| Error code | Description of the fault | LED Timer | LED operation (flashing, amount once) |
| E0 | EEPROM checksum read error | X | 1 |
| E1 | Interconnect error | X | 2 |
| E3 | Indoor fan speed control error | X | 4 |
| E4 | X | 5 | |
| E5 | X | 6 | |
| HER | Condensate level sensor error (sensor or level) | X | 8 |
| F0 | O | 1 | |
| F1 | O | 2 | |
| F2 | O | 3 | |
| F3 | O | 4 | |
| F4 | O | 5 | |
| F5 | O | 6 | |
| F6 | O | 7 | |
| F7 | Reserve | O | 8 |
| F8 | Reserve | O | 9 |
| F9 | Reserve | O | 10 |
| P0 | III | 1 | |
| P1 | Too low or too high voltage | III | 2 |
| RZ | Too low outdoor temperature | III | 4 |
| R4 | Compressor error (see outdoor unit) | III | 5 |
| R5 | Mode conflict | III | 6 |
| R6 | Low pressure protection | III | 7 |
| EU | Refrigerant leak detected | X | 7 |
| E2 | Synchronization error | X | 3 |
| R2 | Compressor overheating | III | 3 |
Cantilever indoor units
Designations:
O-glows;
X-off;
/// - blinks at a frequency of 2 Hz.
| Description of the fault | Timer Lamp | Operation Lamp (flashing, number of times) |
| EEPROM checksum read error | X | 1 |
| Interconnect error | X | 2 |
| Indoor fan speed control error | X | 4 |
| T1 thermistor error (indoor unit) | X | 5 |
| T2 thermistor error (indoor unit) | X | 6 |
| Overcurrent (not all models) | O | 1 |
| T4 thermistor error (outdoor unit) | O | 2 |
| TK thermistor error (outdoor unit) | O | 3 |
| T5 thermistor error (outdoor unit) | O | 4 |
| EEPROM checksum read error (outdoor unit), not all models | O | 5 |
| Fan speed control error (outdoor unit) | O | 6 |
| T2B thermistor error (indoor unit) | O | 7 |
| Malfunction of inverter module (refer to outdoor unit codes) | III | 1 |
| Too low or too high voltage | III | 2 |
| Too low outdoor temperature | III | 4 |
| Compressor error (See outdoor unit) | III | 5 |
| Mode conflict | III | 6 |
| Low pressure protection | III | 7 |
ERROR CODES OF SEMI-INDUSTRIAL SPLIT SYSTEMS MDV
Outdoor units
| Error content | LED 1 | LED 2 | LED 3 |
| Phase rotation | III | X | X |
| No phase (A, B) | III | X | X |
| No phase (C) | X | X | X |
| Low pressure protection | III | III | X |
| Over current | X | X | III |
| Board failure | III | X | III |
| Open or short circuit of the TK sensor circuit | X | III | III |
| Open or short circuit of the T4 sensor circuit | X | III | X |
| Capacitor overheating protection | III | III | III |
Note: Slow blinking of LEDs 1, 2, 3 means that the system is in standby mode.
Indoor units of floor and ceiling (MDUE), duct (MDTB), cassette full-size (MDCD), cassette compact (MDCA3) types.
| Protection or malfunction | monitoring | timer | defrosting | alarm | error code |
| T air sensor | X | III | X | X | E2 |
| Refrigerant T sensor | III | X | X | X | E3 |
| Condensation sensor T (for 18 and 24 kBTU) | X | X | III | X | E4 |
| EEPROM read error | III | III | X | X | E7 |
| Exceeding the level of condensate in the sump | X | X | X | III | E8 |
| Refrigerant leak (if equipped) | III | X | X | III | EU |
Column type indoor unit (MDFM)
| Error code | Protection or malfunction |
| R4 | Evaporator T protection |
| R5 | High T condensation protection |
| P9 | Cold air protection |
| E1 | T air sensor |
| E2 | Refrigerant T sensor |
| E3 | Condensation sensor T |
| E6 | Outdoor unit malfunction |
| HS | Defrost mode is running |
| P0 | No communication between indoor unit control board and display (J2, S4) |
Internal Cassette 4-Way Models
| Mistake | running | timer | defrost | alarm | Description |
| E1 | Led2 Quik Flash |
No communication between indoor and outdoor unit | |||
| E2 | Led 1 Quik Flash |
Faulty - shorted or broken air temperature sensor | |||
| E3 | Led 1 Quik Flash |
Faulty evaporator temperature sensor (connector CN12 on the board) | |||
| E4 | Led 1 Quik Flash |
Faulty temperature sensor at the outlet of the evaporator (connector CN7 on the board) | |||
| HER | LED 4 Quik Flash |
Drain pan overflow error | |||
| E0 | Led 3 Quik Flash |
Mismatch of air conditioner models | |||
| E7 | Led 1 Quik Flash |
Faulty PROM, need to replace the board (microcircuit) or firmware | |||
| Ed | LED 4 Quik Flash |
The external unit is faulty, see errors for it |
Aeronik error codes
Error codes for air conditioners Aeronik (Aeronik)
E1 - increased pressure in the discharge of the compressor;
E2 - freezing of the heat exchanger of the indoor unit has occurred;
E3 - the pressure in the compressor discharge has decreased;
E4 - the temperature of the discharge pipeline has increased;
E5 - operation of the compressor current relay;
F0 - there are malfunctions in the air temperature sensor inside
room, in the heat exchanger in the indoor unit or ambient air in the outdoor unit;
F0 - There may also be a freon leak in the indoor unit.
E6 - there were malfunctions in switching;
E8 - the engine of the indoor unit is overloaded;
F1 - there are malfunctions in the temperature sensor in the heat exchanger;
F4 - there are malfunctions in the temperature sensor of the injected air
air room.
H1- is not an error. The air conditioner has switched to auto defrost mode.
Airwell Error Codes
Error codes for Airwell air conditioners (Airvel)
.JPG)
Akvilon error codes
Akvilon air conditioner error codes (Akvilon)
|
Monitor mode 1 （indicator on display） |
Monitor mode 2 （wiring controller） |
Appearance order |
Actions |
|
|
Communication error |
Shutdown |
|||
|
Drainage system error |
The indicator lights up 4 times/8sec |
Shutdown |
||
|
Phase failure, phase failure or low voltage error |
The indicator lights up 6 times/8sec |
Shutdown |
||
|
The indicator lights up 1 time/8sec |
Shutdown |
|||
|
Indoor unit sensor anomaly (TE) |
The indicator lights up 2 times/8sec |
Shutdown |
||
|
The indicator lights up 2 times/1sec |
Continue work |
|||
|
Protection against internal overheating |
Shutdown |
|||
|
Defrosting (not an error) |
Operation indicator lights up |
Continue work |
Fault codes for power supply 380-415W
Suitable for 36000~60000BTU units, with 380-415W 3N, 50Hz power supply
|
Possible mistakes |
Display mode1 （Panel indicator display） |
Display Mode 2 (indicator errors on the control panel） |
Display mode3 (controller wires） |
Appearance order |
Actions |
|
Communication error |
Lights up 5 times and goes out after 2 seconds |
Shutdown |
|||
|
Communication error with wire controller |
Shutdown |
||||
|
Mistake drainage system |
Lights up 4 times and goes out after 2 seconds |
Shutdown |
|||
|
External protection(Phase loss) |
Lights up 6 times and goes out after 2 seconds |
Shutdown |
|||
|
External protection (discharge from overheating) |
Lights up 10 times and goes out after 2 seconds |
Shutdown |
|||
|
Defence from high pressure |
Shutdown |
||||
|
Low pressure protection |
Lights up 9 times and goes out after 2 seconds |
Shutdown |
|||
|
Room temperature sensor anomaly (Air temperature) |
Lights up 1 time and goes out after 2 seconds |
Shutdown |
|||
|
Indoor unit (TE) sensor anomaly |
Lights up 3 times and goes out after 2 seconds |
Shutdown |
|||
|
Outdoor unit sensor anomaly (TW) |
Lights up 2 times and goes out after 2 seconds |
Lights up 2 times and goes out after 2 seconds |
Continue work |
||
|
Anomaly of the external condensate temperature sensor (TL) |
Lights up 7 times and goes out after 2 seconds |
Continue work |
|||
|
Temperature Sensor Discharge Anomaly(TP) |
Lights up 8 times and goes out after 2 seconds |
Continue work |
Ballu Error Codes
Error codes for air conditioners Ballu (Balu)
E1 - short circuit or open circuit of the sensor responsible for the indoor unit.
E2 - short circuit or open circuit of the sensor responsible for the temperature of the condenser.
E3 - short circuit or open circuit of the sensor responsible for the temperature of the evaporator.
E4 - short circuit or open circuit of the sensor responsible for the indoor unit.
E6 - the protection of the external unit has tripped.
E8 - electrostatic filter clogged.
P4 - an error has occurred in the operation of the evaporator sensor due to high or
low temperature.
P5 - an error has occurred in the operation of the capacitor sensor due to high or
low temperature.
P6 - the defrost mode has been switched on or there has been a delay in operation
heat exchanger.
Carrier Error Codes
Error codes for Carrier air conditioners
2 - there were malfunctions of the temperature sensor in the room;
3 - there were malfunctions of the temperature sensor in the internal
heat exchanger;
6 - there were malfunctions in the operation of the reversing valve in the outdoor unit;
8 - there were malfunctions in the fan motor located in
indoor unit;
9 - no power supply of the indoor unit;
11 - there were malfunctions in the drainage pump;
12 - an error occurred software in the indoor unit;
13 - an error occurred in the configuration;
14 - signal lost in central system management;
15 - there were malfunctions of the temperature sensor in the internal
heat exchanger;
18 - there were malfunctions in the control of the outdoor unit;
20 - the position of the block is not recognized;
21 - there were malfunctions of the current sensor located in the outdoor unit;
22 - there were malfunctions of the temperature sensor in the outdoor
heat exchanger;
23 - there were malfunctions of the discharge temperature sensor;
24 - there were malfunctions in the operation of the fan in the outdoor unit;
26 - other malfunctions in the outdoor unit;
27 - the compressor located in the outdoor unit has blocked;
28 - the value of the discharge temperature is unacceptable;
29 - there were malfunctions in the compressor, located in the outdoor unit;
31 - there was an increase in pressure in the circuit of the outdoor unit.
Cooper&Hunter Error Codes
Error codes for Cooper & Hunter air conditioners (Cooper & Hunter)
Code E0 - exceeding the lower threshold of the starting voltage. Starting the frequency controller.
Code E1 - overpressure. Starting the compressor protection system.
Code E2 - the threat of freezing of the indoor unit. Launching the protection system.
Code E3 - lowering the allowable pressure threshold. Starting the compressor protection system.
Code E4 - exceeding the permissible temperature of the discharge tube. Launching the protection system.
Code E5 - compressor overload. Launching the protection system.
Code E6 - connection / operation error of the signal or power cable.
Code E7 - the set modes of the split system do not match.
Code E8 - evaporator overheating. Launching the protection system.
Code E9 - start of the cold air protection system in thermal mode.
Code F0 - failure of the temperature discharge sensor.
Code F1 - failure of the evaporator temperature sensor.
Code F2 - failure of the condenser temperature sensor.
Code F3 - failure of the air temperature sensor in the system.
Code F4 - failure of the supercharger temperature sensor.
Code F5 - failure of the compressor discharge tube sensor.
Code F6 - condenser overheating.
Code F7 - there is not enough lubrication in the compressor crankcase.
Code F8 - the compressor is overloaded. Launching the protection system.
Code F9 - exceeding the maximum condenser temperature due to a decrease in fan speed during cooling. The compressor is overloaded.
Code FF - there is no power supply to one of the phases / an error in the operation of the phase monitor.
Code FA - condenser/evaporator superheat. Launching the protection system.
Code FH - Evaporator Frost Threat. Launching the protection system.
Code H0 - overheating protection is activated.
Code H1 - condenser defrost mode is activated.
Code H2 - an error in the operation of the electrostatic filter. Launching the protection system.
Code H3 - exceeding the permissible temperature of the compressor. Launching the protection system.
Code H4 - an error in the system.
Code H5 - start the protection system of the inverter unit IPM.
Code H6 - sensor malfunction. Lost return signal from fan motor.
Code H7 - the compressor is faulty.
Code H8 - the drainage system is overflowing. Start protection.
Code H9 - malfunction of the electric heater of the indoor unit.
Daikin error codes
Error codes for Daikin air conditioners (Daikin)
A0 - safety device tripped.
A1 - PCB failure.
A2 - the fan motor is blocked.
A3 - abnormal level of drainage.
A4 - malfunctions in the heat exchanger.
A5 - abnormal temperature in the heat exchanger.
A6 - the fan motor is overloaded.
A7 - Faulty shutter drive.
A8 - current overload of the device.
A9 - expansion valve is defective.
AA - engine overheated.
AH - air filter contamination.
AC - idling is fixed.
AJ - insufficient performance.
AE - weak water supply.
AF - humidifier defect detected.
C0 - the sensor is faulty.
C3 - the sensor responsible for the drainage system is faulty.
C4 - the sensor responsible for the temperature of heat exchanger 1 is faulty.
C5 - the sensor responsible for the temperature of heat exchanger 2 is faulty.
C6 - the fan motor is overloaded.
C7 - the sensor responsible for the blind drive is faulty.
C8 - the sensor responsible for the input current is faulty.
C9 - Faulty inlet air thermistor.
CA - the outlet air thermistor is defective.
CH - high level of pollution.
CC - humidity sensor is defective.
CJ - the temperature sensor located on the control panel is faulty.
CE - the radiation sensor is defective.
CF - the sensor responsible for high pressure is faulty.
Error codes for the outdoor unit of Daikin air conditioners (Daikin)
E0 - a protective device has tripped.
E1 - the printed circuit board located in the outdoor unit is faulty.
E3 - triggering of the sensor responsible for high pressure.
E4 - triggering of the sensor responsible for low pressure.
E5 - overheating relay or compressor motor overloaded.
E6 - the compressor motor is blocked.
E7 - the fan motor is blocked.
E8 - current overload detected.
E9 - the expansion valve is faulty.
AH - a pump blockage has occurred.
EJ - operation of an additional protective device.
EE - the permissible water level has been exceeded in the drainage system.
EF - the unit responsible for the accumulation of heat is faulty.
H0 - general malfunction of the sensors.
H1 - the sensor responsible for the air temperature is faulty.
H2 - the sensor responsible for the electrical supply is faulty.
H3 - the sensor responsible for high pressure is faulty.
H4 - the sensor responsible for low pressure is faulty.
H5 - activation of the overload sensor or the compressor does not work.
H6 - activation of the blocking sensor or the compressor is overloaded.
H7 - activation of the blocking sensor or the fan is overloaded.
H8 - triggering of the sensor responsible for the input voltage.
H9 - triggering of the sensor responsible for the outdoor temperature.
HA - triggering of the sensor responsible for the outlet air.
HH - triggering of the sensor responsible for blocking the water pump.
HС - triggering of the sensor responsible for hot water.
HE - triggering of the sensor responsible for the drainage system.
HF - an accident has occurred in the heat storage unit.
F0 - actuation of devices No. 1 and No. 2, responsible for protection.
F1 - actuation of device No. 1, responsible for protection.
F2 - actuation of device No. 2, which is responsible for protection.
F3 - too high temperature in the discharge pipe.
Dantex Error Codes
Error codes for Dantex air conditioners (Danteks)
E1 - an error occurred in the non-volatile memory;
E2 - there was a zero crossing error;
E3 - no control of the fan speed of the indoor unit;
E4 - the overvoltage protection mode is in effect;
E5 - there is no contact with the control of an open temperature sensor;
E6 - there is no contact with the control of the evaporator temperature sensor.
Chillers Dantex (DN)
E0 - an error occurred in the operation of the water flow meter;
E1 - an error occurred when connecting the phases;
E2 - a communication error has occurred;
E3 - an error has occurred in the outlet water temperature sensor;
E4 - an error has occurred in the temperature sensor of the water at the outlet of
shell and tube heat exchanger;
E5 - an error in the operation of capacitor A;
E6 - an error in the operation of the capacitor B;
E8 - an error has occurred in the charge air temperature sensor;
E9 - an error occurred in the flowmeter;
EA - the main block revealed a decrease in the number of additional blocks;
EB - malfunctions of the frost protection system;
EC - failures in the operation of the drive controller;
ED - an error occurred in the control system and communication between the blocks;
Ed - operation of electrical protection;
EE - an error has occurred in the connection between the microprocessor and the control panel;
EF - an error occurred in the inlet water temperature sensor;
RO - overheating or increased pressure;
P2 - increased pressure or overheated air in system B;
P3 - the pressure in the system has decreased;
P4 - there was an overcurrent in system A;
P5 - there was an overcurrent in system B;
P6 - increased pressure in the condenser of system A;
P7 - increased pressure in the condenser of system B;
P8 - malfunctions in the operation of the compressor discharge temperature sensor in system A;
Pb - frost protection;
PE - the temperature in the heat exchanger has decreased;
F1 - errors in the work of permanent memory;
F2 - errors in the operation of wired controllers.
Elektrolux error codes
Error codes for Elektrolux air conditioners (Electrolux)
E1 - the pressure level is exceeded;
E2 - the indoor unit has frozen;
E3 - too low pressure level;
E4 - malfunctions of the compressor;
E5 - an overcurrent has occurred;
E6 - there is no connection between the indoor and outdoor units;
E7 - there was a conflict in the operating modes of the indoor units;
E8 - the fan of the indoor unit is overloaded;
E9 - the drainage bath is overflowing;
F0 - malfunctions in the operation of the temperature sensor in the indoor unit;
F1 - malfunctions in the operation of the temperature sensor inlet to the heat exchanger
in the indoor unit;
F2 - malfunctions in the operation of the temperature sensor in the middle part
F3 - malfunctions in the operation of the temperature sensor at the outlet of
heat exchanger in the indoor unit;
F4 - malfunctions in the operation of the ambient air temperature sensor;
F5 - malfunctions in the operation of the temperature sensor of the outdoor unit;
F6 - malfunctions in the operation of the temperature sensor inlet to the heat exchanger
in the outdoor unit;
F7 - malfunctions in the operation of the temperature sensor of the exit from
heat exchanger in the indoor unit;
F8 - malfunctions in the operation of the discharge temperature sensor of the first
compressor;
F9 - malfunctions in the operation of the discharge temperature sensor of the second
compressor;
FA - malfunctions in the operation of the crankcase temperature sensor of the 1st compressor;
FB - malfunctions in the operation of the crankcase temperature sensor of the 2nd compressor;
FC - malfunctions in the operation of the high pressure sensor;
FD - malfunctions in the operation of the low pressure sensor;
EH - malfunctions in the operation of the additional heater.
Fuji Error Codes
Error codes for Fuji air conditioners (Fuji)
E00 - an error occurred in the connection of the remote control with the indoor unit;
E01 - an error occurred in the connection between the indoor and outdoor modules;
E02 - malfunctions of the room temperature sensor;
E03 - a short circuit has occurred on the room temperature sensor;
E04 - an error occurred in the operation of the temperature sensor on the internal
heat exchanger;
E05 - a short circuit has occurred on the temperature sensor of the internal
heat exchanger;
E06 - an error occurred in the operation of the temperature sensor on the outdoor
heat exchanger;
E07 - a short circuit has occurred on the outdoor temperature sensor
heat exchanger;
E08 - the supply of electrical energy is interrupted;
E09 - there was an overflow of the tank intended for collecting condensate;
E0R - malfunctions in the operation of the temperature sensor of the outdoor unit;
E0B - a short circuit has occurred on the temperature sensor of the outdoor unit;
Е0С - opening of the temperature sensor on the drain pipe is required;
E0D - a short circuit has occurred on the temperature sensor of the drain pipe;
E0F - the output temperature is too high or too low;
E11 - malfunctions of the control board;
E12 - malfunctions of the fan of the indoor unit;
E13 - giving incorrect signals by the system;
E14 - error in non-volatile memory.
General Climate Error Codes
Error codes for General Climate air conditioners (General Climate)
E2 - short circuit or open circuit of the sensor responsible for the temperature of the internal
air.
E3 - short circuit or open circuit of the sensor responsible for the temperature of the evaporator.
E4 - short circuit or open circuit of the sensor responsible for the temperature of the condenser.
E5 - an error has occurred in the operation of the drainage pump.
E6 - an error in the protection of the external unit.
E7 - An EEPROM error has occurred.
E8 - the overflow protection of the drain pan has tripped.
Gree Error Codes
Error codes for Gree air conditioners (Gri)
E1 - the compressor protection against too high pressure has tripped.
E2 - the frost protection of the indoor unit has worked.
E3 - the compressor protection against too low pressure has tripped.
E4 - the protection of the injection tube against high temperature has tripped.
E5 - the protection of the system or compressor against overloads has worked.
E6 - problems have been detected in the signal or power cables.
E7 - contradictions in the established mode.
E8 - the protection of the electric motor or evaporator against overheating has tripped.
E9 - protection against cold air entry during heating has worked.
E0 - protection of the frequency controller from too low starting
voltage.
H6 - no feedback from the fan motor.
F0 - the temperature discharge sensor is faulty.
F1 - the sensor responsible for the evaporator temperature is faulty.
F2 - the sensor responsible for the temperature of the condenser is faulty.
F3 - the sensor responsible for the air temperature in the system is faulty.
F4 - the sensor responsible for the temperature of the supercharger is faulty.
F5 - the sensor responsible for the compressor discharge pipe is faulty.
F6 - Capacitor overheating detected.
F7 - oil carryover from the compressor is detected.
F8 - protection of the system or compressor from overloads has worked.
F9 - the compressor protection against high temperatures has worked.
FF - no power in one of the phases or the phase monitor is faulty.
H1 - defrosting is in progress.
H2 - protection of the electrostatic filter has tripped.
H3 - protection against severe overheating has tripped.
H4 - A system failure has occurred.
H5 – IPM block protection operation.
H7 - malfunctions in the compressor.
H8 - operation of the drainage system protection against overflow.
H9 - electrical heater malfunctions.
H0 - overheat protection trip.
FA - operation of the condenser or evaporator protection against overheating.
FH - activation of the evaporator frost protection.
Green Error Codes
Error codes for Green air conditioners (Green)
U1 - Current phase fault, circuit detection for compressor. Flashes 13 times. During cooling and drying operation, the compressor will stop while the indoor fan is running. When running in heating mode, the full unit will stop. Replacement outdoor panel AP1 controls.
U3 - Malfunction voltage dropping on the DC bus. Flashes 20 times. During cooling and drying operation, the compressor will stop while the indoor fan will run; When operating in heating mode, the full unit will stop.
The supply voltage is unstable.
U5 - Malfunction of the full unit of current detection. Flashes 13 times. During cooling and drying operation, the compressor will stop while the internal fan is running; During heating operation, the full block will stop the operation. There is a circuit malfunction on the outdoor units AP1 control panel, please replace the outdoor unit AP1 control panel.
U7 - Blinks 20 times. If this fault occurs during heating operation, the device will stop working. 1. The supply voltage is lower than AC175V; 2. Wiring terminal 4V is loose or broken; 3. 4V will be damaged, please replace the cable.
U8 - Zero transition inspection circuit malfun-fiction Fan pin moto. Flashes 17 times every 3s Remote controller operation or
the control panel is available, but the units will not function. The discharging speed of the capacitor is slow, which lead to wrong decision of the controller. Zero crossing detection circuit of the main board abnorma. Refer to flowchar repair.
U9 - Zero crossing outdoor unit malfunction. Flashes 18 times. During cooling operation, the compressor will stop when the indoor fan is running; during heating, the device will not work. Replacement of the external control panel AP1.
Haier Error Codes
Error codes for Haier air conditioners (Haer)
E0 Violation of the condensate drain function.
E1 The compressor is pressurized.
E2 The heat exchanger of the indoor unit is covered with ice.
E3 Insufficient pressure in the compressor.
E4 Compressor overheating.
E5 Compressor disabled due to increased load.
E6 No communication between blocks.
E7 The indoor unit does not respond to commands from the remote control.
E8 Indoor unit motor overload.
F0 The temperature sensor in the room has turned off.
F1 The temperature sensor of the heat exchanger of the indoor unit has turned off.
F2 The temperature sensor of the heat exchanger of the outdoor unit has turned off.
F3 The outdoor temperature sensor has switched off.
F4 The temperature sensor on the air supply has switched off.
FF Power failure.
Hisense Error Codes
Error codes for Hisense air conditioners (Hysens)
Possible reasons faults:
1 Outdoor unit heat exchanger temperature sensor error a. Outdoor unit heat exchanger temperature sensor circuit open; b. Faulty outdoor unit heat exchanger temperature sensor; with. Faulty outdoor unit control circuit board
2 Compressor discharge temperature sensor error a. The temperature sensor circuit in the compressor discharge line is open; b. Faulty temperature sensor in the compressor discharge line; with. Faulty outdoor unit control circuit board
5 Integrated Power Module (IPM) protection trip a. Faulty integrated power module (IPM) circuit board; b. The fan of the outdoor unit is out of order; c. Faulty outdoor unit fan motor; d. Outdoor unit fan blocked; e. Condenser dirty; f. The installation instructions for the outdoor unit are not followed.
6 AC overvoltage or undervoltage protection tripped a. The voltage in the network is above or below the maximum permissible values; b. The power supply voltage of the unit is above or below the maximum permissible values
7 Communication error between indoor and outdoor units a. Breakage of the connecting cable; b. Connecting cable damaged; with. Incorrect connection or broken connection between the filter board and printed circuit board outdoor unit control
8 Overload protection device a. Fan motor failure; b. The evaporator and condenser are dirty; c. Blocked air intake and air outlet; d. Faulty printed control of the outdoor unit; e. Compressor defective
10 Communication error between two microcircuits (control and drive) in the printed circuit a. Poor cable connection b. Faulty outdoor unit PCB or drive circuit board;
11 Outdoor unit EEPROM memory error a. Poor soldering of the EEPROM chip; b. EEPROM chip installation error (wrong position); .EEPROM chip failure
12 Operation of the protection device at low outdoor temperatures a. This protection is triggered if the outdoor temperature drops below 15°C; b. Faulty outdoor temperature sensor; with. Faulty outdoor unit control PCB.
13 Safety device tripped due to overtemperature at a. Faulty temperature sensor in the compressor discharge line; b. Insufficient refrigerant charge in the system
14 Outside air temperature sensor error a. Open circuit of the outdoor temperature sensor; b. Faulty outdoor temperature sensor; with. Faulty outdoor unit control circuit board
15 Compressor thermal overload trip a. Compressor discharge temperature sensor circuit open b. Insufficient refrigerant charge in the system
16 Heat exchanger frost protection or overload protection operation during indoor unit heating operation a. Regular operation of the protection device in case of freezing of the heat exchanger or overloads; b. Indoor heat exchanger temperature sensor circuit open; c. Faulty indoor unit heat exchanger temperature sensor; d. Faulty indoor unit control circuit board; e. Refrigerant circulation disorder
17 Power Factor Compensation (PFC) a. Faulty reactive power compensation device; b. Faulty outdoor unit drive circuit board
18 DC compressor start error a. Incorrect connection or breakage of the compressor power cable; b. The circuit board of the integrated power module (IPM) of the outdoor unit is defective; c. Faulty outdoor unit control PCB d. Compressor defective
19 Compressor drive error a. Incorrect connection or breakage of the compressor power cable; b. The circuit board of the integrated power module (IPM) of the outdoor unit is defective; c. Faulty outdoor unit control PCB d. Compressor defective 7. Troubleshooting
20 Locked-rotor outdoor fan motor protection tripped a. Outdoor unit fan motor circuit open; b. Outdoor unit fan blocked; with. Faulty fan motor; d. Faulty outdoor unit control circuit board
Hitachi Error Codes
Error codes for Hitachi brand air conditioners (Hitachi)
01 - malfunction of the reversing valve or out of order
media temperature.
02 - the mode is activated, forcibly starting the external module.
03 - there is no communication between the external and internal module.
04 - equipment malfunctions, you should pay attention to the readings
other indicators.
06 - violations were detected in the operation of the pump, which pumps out condensate.
07 - requires manual start of the pump.
08 - engine functions are violated.
09 - no communication with the PCB thermistor.
10 - incorrect fan operation.
13 - PCB does not function.
Hyundai error codes
Error codes for Hyundai air conditioners (Hyundai)
0 – error in non-volatile memory;
E1 - an error occurred in the connection of the blocks: indoor and outdoor;
E2 - malfunctions of the sensor of the outdoor unit;
E3 - malfunctions of the fan motor of the indoor unit;
E4 - an open (short circuit) of the indoor air temperature sensor has occurred;
E5 - there was a break (short circuit) of the evaporator temperature sensor;
EC - A coolant leak has occurred.
Jax error codes
Jax Air Conditioner Error Codes (Jax)
E2 - there were malfunctions in the indoor air temperature sensor;
E3 - there are malfunctions in the evaporator temperature sensor;
E4 - there are malfunctions in the condenser temperature sensor;
E5 - an error occurred in the operation of the drainage pump;
E6 - protection in the external unit has tripped;
E7 - failures in non-volatile memory;
E8 - the drain pan is full.
Kentatsu Error Codes
Error codes for Kentatsu air conditioners (Kentatsu)
E1 - there is no contact with the air temperature sensor in the internal
block;
E2 - there is no contact with the temperature sensor of the evaporator;
E4 - there is no contact with the outdoor air temperature sensor;
E5 - there is no contact between the indoor and outdoor unit;
E6 - warning of overheating or freezing of the outdoor module;
E10 - there was a pressure failure in the compressor;
E13 - no electricity is supplied due to tangled wires;
E14 - supply of electricity to the wrong phase;
P4 - the evaporator has overheated;
P5 - the capacitor has overheated;
P7 - exceeding the temperature level in the compressor;
P9 - frost protection turned on;
P10 - the value of the air at the outlet is incorrect;
P11 - the pressure during air intake exceeds the permissible limits;
P12 - supply of high voltage current;
HS - defrosting of the outdoor module is in progress.
EC - Freon leak.
Models Kentatsu (Kentatsu) KSGH/KSRH
E1 - errors occurred in non-volatile memory;
E2 - there was a failure in the process of transformation of the zero cycle;
E3 - incorrect rotation of the fan;
E4 - supplying too high voltage to the compressor;
E5 - there was a violation of communication with the temperature sensor of the air inside;
E6 - there was a communication failure with the evaporator temperature sensor.
Models Kentatsu (Kentatsu) KSFU/KSRU
P4 - the evaporator of the indoor module has overheated;
P5 - the condenser of the outdoor module has overheated;
P9 - thawing is in progress;
E1 - no voltage to temperature sensors;
E2 - there is no connection with the temperature sensor of the evaporator;
E3 - there is no contact with the temperature sensor of the condenser;
E6 - there are malfunctions in the external module.
Channel type air conditioners
E0 - malfunctions of the temperature sensor in the room;
E1 - there were malfunctions in the operation of the evaporator temperature sensor;
E2 - there are malfunctions in the temperature sensor of the external module;
E3 - there is no connection with the outdoor module;
E4 - there were malfunctions in the condenser pump;
E5 - errors in non-volatile memory;
E6 - the condensate collection pan is full.
Lessar Error Codes
Error codes for Lessar air conditioners (Lessar)
E0 - an error has occurred in the flow sensor;
E1 - wrong phase sequence;
E2 - a communication error has occurred;
E3 - an error has occurred in the direct water temperature sensor;
E4 - an error has occurred in the temperature sensor of the shell-and-tube heat exchanger;
E5 - an error has occurred in the temperature sensor of the condenser pipe A;
E6 - an error has occurred in the temperature sensor of the condenser pipe B;
E7 - an error has occurred in the outdoor air temperature sensor;
E8 - an error has occurred in the compressor discharge temperature sensor
systems A;
E9 - an error has occurred in the flow temperature sensor;
EA - there was a loss of communication with the slave units;
P0 - pressure or temperature in system A is exceeded;
P1 - pressure in system A has decreased;
P2 - the pressure or temperature in the system B is exceeded;
P3 - pressure in system B has decreased;
P4 - there was an excess of current in system A;
P5 - there was an excess of current in system B;
P6 - the condensation temperature in system A is exceeded;
P7 - the condensing temperature in system B is exceeded;
P8 - temperature rise in the compressor;
Pb - frost protection.
LG error codes
Error codes for LG air conditioners (Algy)
01 - there was a short circuit in the sensor responsible for the air temperature,
or broken circuit.
02 - a short circuit occurred in the sensor responsible for the temperature
evaporator, or open circuit.
03 - a bad connection between the drive console and
indoor unit.
04 - an error occurred in the operation of the drain pump or float
sensor responsible for the level of condensate.
05 - fixed error of interconnection of internal and external
blocks.
06 - a short circuit occurred in the temperature sensor responsible for the outdoor
block or open circuit.
07 - indoor multi-system units operate in different modes.
HL - the float sensor has opened.
CL - child lock is activated.
Po - the device operates in jet cool mode.
MDV error codes
Error codes for air conditioners MDV (MDV)
Free Match Series
Error indication on the indoor unit 
Fault codes on the outdoor unit 
Universal outdoor unit
Models with three-phase power supply with a capacity of 30, 36, 48, 60 Btu / h
Midea Error Codes
Error codes for Midea air conditioners (Midea)
E0 - an error occurred in the non-volatile memory of the indoor unit.
E1 - an error occurred in the connection of the outdoor and indoor units.
E2 - an error occurred during the transition through zero.
E3 - an error occurred during the operation of the fan motor.
E4 - short circuit or open circuit of the sensor responsible for the temperature of the internal
air.
E5 - short circuit or open circuit of the sensor responsible for the temperature of the evaporator.
EC - a refrigerant leak has been detected.
Mitsubishi Electric Error Codes
Mitsubishi Electric Air Conditioner Error Codes (Mitsubishi Electric)
P1 - an error of sensors at the input is fixed.
P2 - an error in the operation of the sensor responsible for the TH5 heat exchanger.
P4 - the drain pan is full or the CN4F sensor has broken.
P5 - An error has occurred in the drain pump.
P6 - overheating or freezing has occurred.
P9 - an error in the operation of the sensor responsible for the TH2 heat exchanger.
PA - the compressor is forced to stop.
E0, E3 - lost connection with the control panel.
E1, E2 - problems in the control board.
E9, EE - there is no communication between the outdoor and indoor unit.
U1. Ud - overheating protection has tripped, or the 63H sensor has fixed
high pressure.
U2 - low pressure in the supercharger, not enough refrigerant.
U3, U4 - short circuit or open circuit in the temperature sensor of the outdoor unit.
U5 - the temperature of the condenser does not correspond to the norm.
U6 - a forced stop of the compressor or a malfunction has been detected
power module.
U7 - lack of refrigerant or low pressure in the supercharger.
U8 - the motor of the fan installed on the outdoor unit has stopped.
U9, UN - low or high supply voltage, or malfunctions in
current sensor.
UF - the compressor is stuck or a current overload is detected.
UP - compressor stopped due to overload.
Fb - problems in the control board of the external unit.
Mitsubishi Heavy error codes
Error codes for Mitsubishi Heavy air conditioners (Mitsubishi Heavy)
E1 - there was a malfunction in the printed circuit board of the indoor unit or there were
malfunctions in the control panel;
E2 - there was a duplication of addresses of indoor units;
E3 - the address of the outdoor unit is incorrect;
E5 - there were malfunctions in the control board of the outer side;
E6 - an open (short circuit) of the evaporator sensor has occurred;
E7 - there was a break (short circuit) of the sensor of the indoor unit;
E8 - an evaporator overload has occurred;
E9 - an error in the operation of the drainage pump;
E10 - more than 16 blocks are connected to the control panel;
E11 - more than 1 block is connected to the control panel when the address is occupied;
E12 - errors in the address settings;
E14 - incorrect settings of the master and slave connections were made;
E16 - there were malfunctions in the operation of the fan of the indoor unit;
E28 - there were malfunctions in the sensor of the control panel;
E30 - an error occurred in the connection of the outdoor and indoor units;
E31 - incorrect address settings;
E32 - a wire break has occurred or the phase sequence has been incorrectly performed;
E33 - there was a break in the winding of the wire;
E34 - the phase of the winding has opened;
E35 - malfunctions in the operation of the sensor or an increase in temperature in
condenser;
E36 - there was a deviation in the temperature of the outlet air above the norm;
E37 - there were malfunctions in the condenser temperature sensor;
E38 - there were malfunctions in the outdoor air temperature sensor;
E39 - there were malfunctions in the temperature sensor of the discharge pipe;
E40 - there was an increase in pressure in the system;
E49 - a decrease in pressure has occurred or the refrigerant is not enough;
E53 - there were malfunctions in the thermistor of the suction pipe;
E54 - the low pressure sensor is disconnected;
E55 - there are malfunctions in the temperature thermistor inside the compressor;
E56 - there were malfunctions or a break in the temperature sensor of the power
transistor;
E57 - insufficient amount of coolant;
E59 - the compressor does not start;
E60 - an error occurred in the positioning of the compressor;
E63 - an emergency shutdown of the indoor unit has occurred.
Neoclima error codes
Error codes for Neoclima air conditioners (Neoclima)
Code E0 - an error in connecting the indoor and outdoor units.
Code E1 - an error in the operation of the indoor unit. Disruption of communication with the controller.
Code E2 - an error in the operation of the temperature sensor.
Code E3 - the temperature sensor of the condenser tube is defective.
Code E8 - violations in the operation of the heating system.
Code F0 - an error in the operation of the internal fan.
Code F2 - the external protection system has worked.
Code F3 - protection in the high pressure system has tripped.
Code F4 - protection in the low pressure system has tripped.
Code F5 - water overflow protection has tripped.
Code F8 - protection against overheating of the outdoor unit has worked.
Code F9 - incorrect phase sequence. Error in the system.
Code P4 - the compressor of the inverter air conditioner is faulty.
Code P6 - an error in the operation of the outdoor unit EEPROM.
Panasonic error codes
Error codes for Panasonic brand air conditioners (Panasonic)
H00 - no problems found.
H11 - no communication between the outdoor and indoor unit or malfunction
control boards.
H12 - the power of the indoor units does not match the outdoor one.
H14 - short circuit of the air sensor.
H15 - short circuit of the sensor responsible for the temperature of the compressor.
H16 - lack of freon in the external unit or the current circuit is broken
board transformer.
H17 - breakage of the sensor responsible for the temperature on the tube,
designed to dry the refrigerant.
H19 - the board, fan motor or connectors are jammed
wires.
H21 - Faulty or clogged float sensor drainage system.
H23 - sensor 1 is broken, which is responsible for the temperature of the evaporator.
H24 - sensor 2 is broken, which is responsible for the temperature of the evaporator.
H25 - malfunctions in the ionization unit or internal board.
H26 - the ionizer has failed.
H27 - short circuit of the sensor responsible for the temperature of the outdoor air.
H28 - short circuit of the sensor responsible for the temperature of the condenser.
H30 - the sensor responsible for the discharge temperature is broken.
H32 - short circuit of the sensor responsible for the temperature of the condenser at the outlet.
H33 - An error has occurred in the interconnection.
H34 - short circuit of the sensor responsible for the temperature of the module heatsink.
H35 - a pump malfunction or drain blockage has been detected.
H36 - short circuit of the sensor responsible for the temperature of the gas pipe.
H37 - short circuit of the sensor responsible for the temperature of the liquid tube.
H38 - a discrepancy between the outdoor and outdoor unit has been detected.
H39 - freon circuits and wires are mixed up, or does not work
solenoid valve.
H41 - wires are connected incorrectly.
H50 - malfunctions in the board or fan motor.
H51 - The nozzle is clogged.
H52 - the limiter switch is defective.
H58 - Patrol Sensor unit is defective.
H64 - the sensor responsible for high pressure is faulty.
H97 - malfunctions in the compressor motor or indoor unit board.
H98 - Faulty overheating protection.
H99 - evaporator freezing has been detected.
F11 - the four-way valve does not work correctly.
F17 - the indoor unit is frozen.
F90 - the compressor winding is broken.
F91- refrigeration circuit it works incorrectly.
F93 - the compressor winding is broken.
F94 - high pressure blower protection does not work.
F95 - the heat exchanger of the outdoor unit has overheated.
F96 - the power module has overheated.
F97 - Compressor temperature exceeded.
Pioneer error codes
Error codes for Pioneer air conditioners (Pioneer)
Air conditioner error code Pioneer Yellow diode Green diode
Red diode
Deciphering Pioneer Air Conditioner Errors
E0 * The function of the discharge temperature sensor is broken
E6 * The function of the capacitor temperature sensor is broken
E6 * The function of the outdoor air temperature sensor is broken
E1 * The function of the temperature sensor in the room is broken
E2 * The function of the evaporator temperature sensor is broken
E3 m m m Indoor unit fan broken
E4 m * IPM system failure
E5 m m Power failure
E8 * mm m Voltage supply failure
E9 m Compressor started incorrectly
EA * Incorrect communication with the outdoor unit
EU m * The air conditioner is supplied with an electric current of invalid parameters
EE EEPROM failure
EP No communication between outdoor and indoor units
P0 The unit did not start correctly
P1 Discharge superheat
P2 Increased current in the circuit
P3 Mains voltage too high
P4 mm * No communication with the current relay
P5 Evaporator overheat
P6 Condenser overheating
P7 Matrix protection IPM
* - the diode is lit, m - the diode is blinking.
Error codes for Pioneer air conditioners of the external module:
Pioneer air conditioner error code (number of diode blinks) Pioneer air conditioner error decoding
1 No communication with external temperature sensor
2 No communication with the condenser temperature sensor
3 No connection with discharge temperature sensor
4 Mains current too high
5 Mains voltage too high
7 No communication with indoor unit
9 The unit was not started up correctly
12 Mains voltage too high
13 IPM board protection
16 Compressor over temperature
17 Discharge temperature too high
18 Condenser temperature too high
19 IPM board malfunction
20 Communication error between indoor and outdoor units
22 Deicing
Quattroclima error codes
Error codes for Quattroclima air conditioners (Quattroclima)
Error or task
RUN indicator
Digital
display
Cause and troubleshooting
Switching to defrost mode
Flashes 1 time per second
dF
Is not an error.
Cold air prevention
Flashes 1 time per 3 seconds
Indoor unit fan does not rotate This is not an error.
Service function of the air conditioner and its settings cannot be changed.
Room temperature sensor error
Flashes 2 times in a row every 4 seconds
E2
Pipe temperature sensor error
Flashes 3 times in a row every 5 seconds
E3
1. Check the resistance of the temperature sensor, if the resistance of the sensor is not correct for the current temperature, replace the sensor.
2. Check sensor connection and continuity
3. The control board is defective, replace the board.
Outdoor unit error
Flashes 4 times in a row every 6 seconds
E4
1. Check compressor current and winding resistance.
2. Check the operating pressure. In the event of a refrigerant leak: Remove any remaining refrigerant and repair the leak, evacuate the system and charge according to the scale.
3. Check the outdoor unit pipe sensor.
4. Check the condenser of the outdoor unit, it must be clean, free of dust and dirt.
5. Check the operation of the outdoor unit fan.
6. The control board is defective, replace the board.
Indoor fan control error
Flashes 5 times in a row every 7 seconds
E5
1. Check the connectors connecting the fan motor to the control board.
2. Check the indoor fan motor.
3. Check the control board components for damage. Replace damaged elements or control board.
Internal board error
Flashes 6 times in a row every 8 seconds
E6
1. Check the fan of the indoor unit.
2. Check the output signal from the control board. Replace control board.
Communication error between blocks
Flashes 7 times in a row every 9 seconds
E7
1. Check the interunit electrical connection.
2. Check compressor current and winding resistance.
3. Check the operating pressure.
overheat protection
Flashes 8 times in a row every 10 seconds
E8
1. Check the filters, they must be clean.
2. Check the operation of the indoor unit fan.
3. Check the indoor unit pipe sensor.
4. Check the operating pressure. In the event of a refrigerant leak: Remove any remaining refrigerant and repair the leak, evacuate the system and charge according to the scale.
Samsung Error Codes
Error codes for Samsung air conditioners (Samsung)
E464 - An overload has occurred in the power module.
E461 - it is impossible to start the compressor.
E473 - the compressor has blocked.
E466 - Incorrect voltage in the DC module of the board.
E221 - an error has occurred in the sensor responsible for the outdoor temperature
air.
E416 - overheating detected.
E251 - An error has occurred in the temperature sensor.
E468 - An error has occurred in the current sensor.
E465 - an error has occurred in the operation of the compressor.
E237 - An error has occurred in the temperature sensor winding.
E202 - The time allotted for the connection has expired.
E458 - An error has occurred in the operation of the fan.
E471 - an error occurred in the operation of OTP.
E467 - an error occurred while rotating the compressor.
E469 - An error has occurred in the voltage sensor.
E554 - A refrigerant leak has been detected.
E472 - AC voltage error.
E121 - short circuit in the sensor responsible for the temperature of the indoor air.
E122 - short circuit in the sensor responsible for the temperature of the evaporator.
E154 - An error has occurred in the fan of the indoor unit.
E101 - connection time exceeded.
E186 - MPI error fixed.
Sanyo Error Codes
Error codes for Sanyo air conditioners (Sanio)
E01, E05, E14, E17 - an error occurred when receiving a communication signal;
E02, E04, E06, E10, E20 - an error occurred during the transmission of the communication signal;
E03 - an error occurred in the remote control;
E07 - low power level of the indoor unit;
E08 - there was a duplication of the installation of the addressee of the indoor unit;
E09 - duplication occurred in the control panel setting;
E11 - there was a duplication in the implementation of simultaneous multi-control operations;
E15 - high power level of the indoor unit;
E16 - there is no connection of the elements of the indoor unit;
E18 - an error occurred in the connection with the MDC;
E31 - errors occurred in the group settings of the indoor unit;
L01 - types of indoor and outdoor units do not match;
L02 - in the group control there was a duplication of the main block;
L03 - there was a duplication of the address in the outdoor unit;
L04 - a group connection has been made for the indoor unit;
L07 - address or group not set;
L08 - power in the indoor unit is not set;
L09 - an error occurred in setting the power of the outdoor unit;
L10 - an error occurred in the connection of the control circuits;
L11 - an error occurred in setting the power of the indoor unit;
L13 - as a result of connecting the ceiling panel, a failure occurred;
P01 - malfunctions of the float relay;
P03 - there were problems with food;
P05 - no gas;
P09 - overheating has occurred;
P10 - there were problems with the discharge temperature;
P15 - blocked 4-code valve;
P19 - cooling is overloaded;
P20 - malfunctions of the outdoor unit fan;
P22, P26 - failures in the operation of the compressor inverter;
P29 - errors in the operation of multicontrol when performing simultaneous operations;
P31 - overload in the compressor;
H01, F02 - malfunctions of the temperature sensor of the indoor unit;
F01 - malfunctions of the temperature sensor in the outdoor unit;
F04, F06, F07 - violation of the temperature mode in the outdoor unit;
F08 - violations in the intake temperature mode;
F10 - violations in the discharge temperature mode;
F12, F29, F31 - errors in the internal non-volatile memory.
TCL Error Codes
Error codes for TCL air conditioners (Tcl)
E0 RUN、TIMER –both winking In and out communication failure. No communication between outdoor and indoor units, check interconnection, indoor and outdoor boards
EC RUN、TIMER –both winking Outdoor communication failure
E1 RUN-1 time/8s Outdoor sensor
E2 RUN-2 times /8s Indoor coil temperature sensor
E3 RUN-3 times /8s Outdoor coil temperature sensor Faulty condenser temperature sensor
E4 RUN-4 times /8s System abnormity System abnormal
E5 RUN-5 times /8s Type mismatch
E6 RUN-6 times /8s Indoor fan motor
E7 RUN-7 times /8s Outdoor temperature sensor
E8 RUN-8 times /8s Discharge temperature sensor Compressor discharge temperature sensor
E9 RUN-9 times /8s Invert module abnormity
EF RUN-10 times /8s Outdoor fan motor（DC） Outdoor fan motor
EA RUN-11 times /8s Current sensor
EE RUN-12 times /8s EEPROM failure ROM, firmware failure.
EP RUN-13 times /8s Top of compressor temperature switch
EU RUN-14 times /8s Voltage sensor
EH RUN-15/8 sec Intake temperature sensor
Emergency stop
P1 RUN: Blink; TIMER: 1 blink /8 sec Overvoltage / undervoltage protection Low/high supply voltage
P2 RUN: Blink; TIMER: 2 blink /8 sec Overcurrent protection
P4 RUN: Blink; TIMER: 4 blink /8 sec Exhaust overtemperature protection
P5 RUN: Bright; TIMER: 5 blink /8 sec Subcooling protection under cooling mode
P6 RUN: Bright; TIMER: 6 blink /8 sec Overheating protection under cooling mode
P7 RUN: Bright; TIMER: 7 blink /8 sec Overheating protection under heating mode
P8 RUN: Bright; TIMER: 8 blink /8 sec Outdoor overtemperature / undertemperature protection Outdoor overheat / undertemperature protection
P9 RUN: Blink; TIMER: 9 blink /8 sec Drive protection (software control)
P0 RUN: Blink; TIMER: 10 blink /8 sec Module protection (hardware control)
Toshiba error codes
Error codes for Toshiba air conditioners (Toshiba)
00-0C - an error in the board of the indoor unit or sensor responsible for
air temperature inside the device.
00-0d - an error in the control board or sensor responsible for
radiator temperature.
00-11 - malfunctions in the motor or fan board.
00-12 - repair or replacement of the control board is required.
01-04 - the board or fuses on it burned out, interconnect
installed incorrectly.
01-05 - an error has been fixed in the inverter board.
02-14 - overload detected in the inverter.
02-16 - there was a short circuit in the compressor windings.
02-17 - An error has occurred in the current sensor.
02-18 - an error occurred in the temperature sensors.
02-19 - An error has occurred in the temperature sensor of the board.
02-1A - burned out or blocked the motor or board.
02-1b - a malfunction in the board or sensor responsible for the temperature of the board.
02-1C - the compressor did not have time to start in the allotted time.
03-07 - an error has occurred in the inverter board or a defect has been noticed
coolant.
03-1d - the compressor is faulty.
03-1E - an error has occurred in the sensor responsible for the suction tube.
03-1F - the refrigeration circuit is overloaded or the voltage in the compressor is low.
03-08 - the four-way valve is faulty.
There is "CHEK" on the remote control, press it, point the remote control at the air conditioner and scroll through the codes with the temperature arrows, the air conditioner will produce a signal on the fixed codes. So you determine the error code, and you can also reset it. If the error is not critical.
Zanussi error codes
Error codes for Zanussi air conditioners (Zanussi)
Error codes for indication in the indoor unit
Error code Fault Display indication Remark
E2 Room temperature sensor failure TIMER lamp flashes at 5 Hz
E3 Evaporator sensor fault START lamp flashes at 5 Hz
E5 Condenser sensor fault Defrost lamp flashes at 5 Hz The system will automatically operate correctly after the fault has been corrected
F5 Faulty drain pan float switch Alarm lamp flashes at 5 Hz
F2 Fault in the outdoor unit The defrost and alarm lamp flashes at a frequency of 5 Hz
P6 EEPROM failure START and TIMER lamp flashing at 5 Hz The system will operate normally after complete shutdown.
Indication of error codes in the Zanussi outdoor unit
Fault Indication on the board
Low pressure protection Flashes 4 times every 6 seconds
High pressure protection Flashes 3 times every 5 seconds
Reverse phase protection Flashes 9 times every 11 seconds
Over current protection Flashing 7 times every 9 seconds
Outside temperature sensor failure Flashes 5 times every 7 seconds
Outdoor heat exchanger overheating protection Flashes 2 times every 4 seconds
Defrost protection Flashing 1 time every 3 seconds
EEPROM error Flashes 8 times every 10 seconds
With Gree air conditioners and split systems, repairs are easier than with hi-fay series models.
Self-diagnosis of Gree air conditioners
What explains this, the layman asks?
The explanation is simple Gree: codes. On Gree air conditioners and split systems, there are not many protection system sensors. Those. everything is simplified.
- Internal self-diagnosis of Gree air conditioners unified and almost identical in error positions to inexpensive air conditioners, such as Pioneer, General Climate, Lessar and others.
You will laugh, but for example, the catalog of Supra air conditioners did not even change the name of the outdoor unit, perhaps there are not enough skills in Photoshop, perhaps they did not consider it necessary.
In a word, how were Supra air conditioners certified in Russia? It's a mystery to me. Supra Catalog!! In faith. Heh...
Self-diagnosis of Gree air conditioners is, -
- high pressure protection
- protected from freezing of the evaporator,
- Compressor overload protection,
- Errors in switching the air conditioner during installation, confusing wires,
- And errors of temperature sensors of the evaporator and condenser.
Everything, agree not much. Gree, like an air conditioner, is functionally simple, so there are not many error codes.
There are drawbacks to this simplification - these are weak control board varistors, insufficient smoothing
Error codes table, continued.
currents during voltage surges. A trifle, but it must be borne in mind when repairing air conditioners Gree and their analogues.
Example: country house. The owners, leaving the dacha, usually de-energize the building with a common switch.
Those. extinguished and everything, calmed down. We arrived ... They turned on the light with the same switch, and the air conditioner, refrigerator, or other Appliances does not work. Why? The answer is simple.
When the power is turned on with a load, current and voltage surges occur.
Varistors that smooth out voltage surges cannot cope with the current load and burn out, burn well with smoke and soot, in the absence of a protective shell, as a rule, together with the fuse of the control board of the indoor unit of the split system.
There are "specialists" who use wire when burning a fuse. Can you do that? It is possible, but then, in addition to the varistors, the control board, the fan motor of the indoor unit will also burn out, and ... it rushed up to the compressor windings of the outdoor unit of the air conditioner.
Fireworks at the cottage. - Expensive repairs.
Troubleshooting and breakdowns of the air conditioner, Gree: codes, as usual, we start with ...
- refrigeration circuit malfunctions,
- malfunctions of the electrical part, system e-mail. power supply and air conditioning control.
Source:
GREE Semi-industrial, industrial air conditioners, - error codes.
Error Code = E1
Compressor, pressure surges (beep).
Error Code = E2
Faulty coil
Error code = E3
Low pressure air conditioning compressor activated (beep)
Error code = F0
Faulty room temperature sensor.
Error code = F1
Incorrect sensor resistance.
Error code = F2
- The temperature sensor of the outdoor unit of the air conditioner has tripped.
Error code = F3
Temperature sensor circuit open.
GREE Split air conditioners Error code...
The cause of the malfunction, - the refrigerant system is highly protected, - pressure.
code = E1
Gree LED blinks 1 time.
Indicator, - cooling =
Heating indicator =
The cause of the Gree malfunction is frost protection.
code = E2
Air conditioner start LED = LED blinks 2 times.
Indicator, - cooling =
Heating indicator =
Cause of the malfunction, - Compressor exhaust high temperature protection.
code = E4
Air conditioner start LED = flashes 4 times
Indicator, - cooling =
Heating indicator =
Cause of malfunction, - AC overcurrent protection
code = E5
Air conditioner start LED = LED blinks 5 times
Indicator, - cooling =
Heating indicator =
The cause of the malfunction is a communication failure between the indoor unit of the air conditioner and the outdoor unit of the split system.
code = E6
Gree air conditioner start LED = blinks 6 times
Indicator, - cooling =
Heating indicator =
Cause of malfunction, - Anti-high temperature protection
code = E8
Air conditioner start LED = flashes 8 times
Indicator, - cooling =
Heating indicator =
Cause of the malfunction, - No feedback from the internal fan motor
code = H6
Air conditioner start LED = flashes 11 times
Indicator, - cooling =
Heating indicator =
Cause of the malfunction, - Jumper cap faulty protection
code = C5
Air conditioner start LED = flashes 15 times
Indicator, - cooling =
Heating indicator =
Cause of malfunction, - Closed ambient sensor open, no contact or short circuit
code = F1
Indicator, - cooling = LED flashes 1 time
Heating indicator =
Name of sensor malfunction or failure = Indoor tube open, no contact or short circuit
code = F2
Air conditioning start LED =
Indicator, - cooling = LED flashes 2 times
Heating indicator =
The cause of the malfunction, - the external ambient sensor is open, there is no contact or a short circuit
code = F3
Air conditioning start LED =
Indicator, - cooling = LED flashes 3 times
Heating indicator =
Cause of malfunction, - Outer tube sensor open, no contact or short circuit
code = F4
Air conditioning start LED =
Indicator, - cooling = flashes 4 times
Heating indicator =
Name = malfunction or failure of the exhaust sensor open, no contact or short circuit
code = F5
Air conditioning start LED =
Indicator, - cooling = LED flashes 5 times
Heating indicator =
Cause of malfunction, - Over load limit / frequency reduction
code = F6
Air conditioning start LED =
Indicator, - cooling = Blink 6 times
Heating indicator =
Cause of malfunction, - Over current limit / frequency output
code = F8
Air conditioning start LED =
Indicator, - cooling = flashes 8 times
Heating indicator =
The cause of the malfunction, - High exhaust gas temperature limit / frequency reduction
code = F9
Air conditioning start LED =
Indicator, - cooling flash = 9 times
Heating indicator =
The cause of the malfunction, - Overvoltage protection for Ru
code=PH
Air conditioning start LED =
Indicator, - cooling = flashes 11 times
Heating indicator =
Cause of the malfunction, - alternating current detection of faulty circuits
code = U5
Air conditioning start LED =
Indicator, - cooling = flashes 13 times
Heating indicator =
The cause of the malfunction, - Compressor reverse protection
code = U4
Air conditioning start LED =
Indicator, - cooling = flashes 14 times
Heating indicator =
The cause of the malfunction, - Over the compressor phase current protection
code = P5
Air conditioning start LED =
Indicator, - cooling = flashes 15 times
Heating indicator =
The cause of the malfunction is the inlet of the malfucntion by the sensor tube
code = b5
Air conditioning start LED =
Indicator, - cooling = flashes 19 times
Heating indicator =
The cause of the malfunction, - The open DC fan motor is defective.
code = L3
Air conditioning start LED =
Indicator, - cooling = flashes 21 times
Heating indicator =
Cause of the malfunction, - Output malfunction or breakage of the tube sensor
code = b7
Air conditioning start LED =
Indicator, - cooling = flash 22 times
Heating indicator =
The cause of the malfunction, - The compressor overload sensor is defective.
code=FE
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
Cause of malfunction - Defrosting
code=h3
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = LED blinks 1 time
The cause of the malfunction is static dust protection cleaning
code = H2
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = LED blinks 2 times
Cause of malfunction, - Compressor overload protection
code = H3
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = LED flashes 3 times
Cause of malfunction, - System abnormal protection
code = H4
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 4 times
The cause of the malfunction, - IPM protection
code = H5
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = LED flashes 5 times
Cause of malfunction - PFC protection
code=HC
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 6 times
Cause of malfunction, - Compressor step loss protection
code = H7
Air conditioning start LED =
Indicator, - cooling =
Heating indicator flash = 7 times
Cause of the malfunction, - Heating against high frequency temperature drop
code=HO
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 10 times
Cause of malfunction - Startup failure
code = Lc
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 11 times
Cause of malfunction, - Phase failure protection compressor
code = U2
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 12 times
Cause of malfunction, - Phase current compressor faulty detection circuits
code = U1
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 13 times
Cause of malfunction, - Compressor degaussing protection
code=HE
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 14 times
The cause of the malfunction, - EEPROM loading is defective.
code=EE
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 15 times
The cause of the malfunction is a communication failure between the motherboard and the board driver
code = P6
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 16 times
The cause of the malfunction is a malfunction of the charge capacitor
code=PU
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 17 times
The cause of the malfunction is the IPM of the sensor circuit is faulty.
code = P7
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 18 times
The cause of the malfunction, - IPM high-temperature protection
code = P8
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 19 times
Cause of the malfunction, - PN protection voltage drop
code = U3
Air conditioning start LED =
Indicator, - cooling = flashes 20 times
Heating indicator =
The cause of the malfunction is low voltage protection PN
code=PL
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = flashes 21 times
Cause of the malfunction, - The current detection circuit is faulty or the current sensor is faulty or broken
code = Rs
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
The cause of the malfunction, - Compressor phase failure protection
code = Ld
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
Cause of malfunction, - Compressor or rotary protection blocked
code=LE
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
The cause of the malfunction, - IPM is more than the temperature limit / frequency reduction
code=EU
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
Cause of malfunction - 4-way reversal valve abnormal
code = U7
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
The cause of the malfunction is the shutdown of the exhaust gas temperature sensor
code = U8
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
Malfunction Cause - AC Zero Voltage Detection Error
code = U9
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
The cause of the malfunction, - Over the tube frequency temperature difference
code=FA
Air conditioning start LED =
Indicator, - cooling =
Heating indicator = 
Cause of the malfunction, - Anti-freeze limit / frequency reduction
code=FH
Air conditioning start LED =
Indicator, - cooling =
Heating indicator =
Models: brand air conditioner repair KFR-32GW/BP, KFR-45LW/D, KFR-3502GW/BP, KFR-2501GW, KFR-45LW, KFR-3301GW, KFR-3201GWCPU, KFR-2608GW/BP and other KFR series, PDF fail.