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Ferroli boiler turns on. Ferroli boiler errors and their codes. Types of errors in the Ferroli boiler

Breakdowns happen even with the most expensive and reliable equipment. If something is wrong with the gas boiler, you need to calmly figure out what exactly happened.

Perhaps this is not a breakdown, but a small failure. Ferroli boiler, faults are displayed using three LEDs.

Let's figure out: what these signals mean, what can be the cause of malfunctions gas boiler Ferolli and how the problem is fixed.

As long as the warranty period has not yet expired, the owner has the right to receive free repair and maintenance. Repair may be denied if the following terms and conditions have been violated:

  • ventilation was not organized;
  • grounding not done;
  • broken factory seals;
  • there are damages on the case, such as dents and scratches;
  • high humidity in the room;
  • the boiler room is very dusty;
  • power surges in the network;
  • main gas of poor quality or with pressure drops;
  • the oven was overheated.

In all other cases, you can contact the service department responsible for the Ferroli boilers in your city:

  1. Moscow - "Thermo-Prestige".
  2. St. Petersburg - Energo Garant.
  3. Ekaterinburg (and 80 km around) - "Hat House".
  4. Novosibirsk - "GUDT TeploVodoMontazh".

Ferroli boiler error codes: diagnostics, troubleshooting

The results of self-diagnostics of boiler malfunctions are given in the form of a code on three light diodes.

In case of some breakdowns, the boiler is blocked. To unlock, press and hold the Reset button. Such errors are denoted by the letter "A", they require repair.

Gas wall-mounted boiler Ferroli Divatop Micro F 37 - device

In other cases, the boiler is blocked only for a while, until the problem indicator returns to normal (for example, when overheating). Such errors are indicated by the letter "F".

Check what

First check:

  1. Is the gas supply normal - the inlet pressure should be 20 bar.
  2. What is the pressure of the coolant - the norm is 0.5 - 1.5 bar.
  3. Is there electricity.
  4. What expense tap water(4 liters/min is the minimum).

A01 - The burner did not ignite

Indicator: Red light flashes quickly.

Why and what to do:

  • Gas is not supplied. Check if the gas supply is interrupted by air trapped in the pipes.
  • Ignition electrode defective. You need to make sure that the wires are connected correctly, that the electrode is correctly installed and that there are no deposits on it.
  • Has broken gas valve. If that's the case, it's best to replace the valve.
  • If the ignition power is too low, it must be adjusted.

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A02 - False flame

Indicator: The green light is on or flashing.

The burner is off, but the automation detects the ionization current and shows an error. If there was a request for ignition, the light is on. If there are no requests, it blinks.

Ferroli boiler control panel

Why and what to do:

  • The reason may be in the ionization electrode: It may be dirty. Perhaps the gap between the electrode and the burner is broken (the norm is 3 mm). Damage may be on the electrode cable.
  • Low ignition power: adjust in parameter menu P01.
  • The failure may be in the control board. Restart boiler. If the error recurs, the board needs to be changed.

A03 - Overheating

Indicator: Red light flashes quickly.

Why and what to do:

  • Poor water circulation in the system ( normal pressure- 1.2 bar). This may be due to a malfunction circulation pump, getting into the pipes of air or blockage.
  • The circulation pump could fail due to voltage drops if a stabilizer is not installed. Check the resistance on the pump stator.
  • If there is damage on the impeller, the pump will work, but not give the desired voltage.
  • Also, the pump can be checked for jamming. To do this, open front side plug and turn the shaft several times with a screwdriver.
  • If the pump does not receive electricity, the problem is in the control board. Need to change it.
  • If the pump is working properly, the air has been bled from the system, the pipes have been cleaned, and the boiler is still heating up, replace the temperature sensor.

F04 - Smoke thermostat

Indicator: flashing green quickly. Purpose of the sensor flue gases– turn off the boiler in case of overheating.

In this case, the boiler is automatically blocked for 20 minutes.

Just be patient and after unlocking, start the boiler again. There may not be anything else to do.

Otherwise, you need to check the chimney:

  • whether it is polluted;
  • whether there are ice and other problems that could lead to a violation of traction;
  • Is the length of the pipe sufficient?
  • could there have been a “overturning” of thrust due to strong winds.

If the chimney is in order, it is possible that the sensor itself or the control board is junk.

F11 - Incorrect operation of the DHW sensor

Indicator: Green and yellow lights flash quickly.

Why and what to do:

It could be a short circuit or a broken wire. It is necessary to check the resistance of the sensor, the correct connection of the wires. If the problem cannot be fixed, the sensor will have to be replaced.

F37 - The pressure in the heating has dropped

Indicator: Fast blinking yellow.

Why and what to do:

Most likely, you just need to add water to the system to the desired level. If the problem is due to a water leak, the leak must be found and repaired.

F43 - Heat exchanger protection

Indicator: red and yellow flash alternately.

The boiler will not turn on until the temperature of the sensor drops to 45 0 C.

Ferroli double-circuit gas boiler heat exchanger before cleaning

Why and what to do:

Perhaps the circulation of water is disturbed due to the fact that the pipeline is clogged (or overgrown with scale). Air could have entered the system. If all this is not there, look for a breakdown in the sensor itself or the circulation pump (see error A03).

F50 - Defective gas valve modulation coil

Triggered when the coil current drops or the circuit is open.

The coil needs to ring for a short circuit between the turns and a break. Normal resistance is 24 ohms.

After restarting the boiler, check the operation. If the error repeats, the problem is in the control board.

A51 - The flame goes out due to problems with smoke removal

With such an error, after restarting the boiler will be blocked for 5 minutes (the fan will continue to work).

What to do:

  • It is necessary to check the pipe and the boiler draft interrupter for dirt, for possible turbulence and overturning of the draft due to wind.
  • Check the operation of the fan: for damage, measure the voltage (normal - 220V). Check the connection of the connectors to the fan.
  • Check the gas valve: if there is a short circuit in the coil, if there are any breaks. Measure the resistance: in the modulating valve it should be 24 ohms. If damaged, replace the valve.
  • Check the ionization electrode: check the gap between it and the burner (the norm is 3 mm), whether the cable is in good condition, if there is a lot of dirt, clean it.
  • Check grounding.
  • If everything is already done, restart the boiler. If the problem persists, change the control board.

As you can see, many errors block the boiler and you just need to wait. However, if you find out that the problem is more serious, call the experts. Error codes for gas boilers are provided for informational purposes only. If you are not an expert in this field, do not try to fix complex breakdowns yourself!

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Error codes for wall-mounted boilers Ferroli

Errors with the letter "A" - lead to blocking of the boiler.

Errors with the letter "F" - do not lead to blocking the boiler.

Error code / Name of the error, behavior of the boiler / Causes of the malfunction and how to eliminate it

Error A01

No flame signal

It is based on the number of ignition attempts, which directly depends on the type of combustion chamber and the gas used.

1. closed chamber combustion, natural gas; Three ignition attempts lasting 5 seconds each, a pause between attempts of 50 seconds (indicated by "d3").

2. Closed combustion chamber, liquefied gas; One ignition attempt lasting 5 seconds

3. Open combustion chamber, natural gas. Two ignition attempts lasting 5 seconds, a pause between attempts of 50 seconds (indicated by "d3").

4. Open combustion chamber, liquefied gas. One ignition attempt lasting 5 seconds.

Ignition sequence First attempt: voltage is applied to the gas valve and the ignition transformer (the ignition force corresponds to the value P01).

If a flame is detected, further modulation is controlled by the boiler automation. If the flame is not detected, then after the pause "d03" a 2nd ignition attempt is made.

With each subsequent attempt, the sequence of automation is the same as described above. In the event that after all ignition attempts the flame is not detected, the automation generates a malfunction signal, the display shows error A01.

If the ignition of the burner was successful, but then the flame went out, then before starting the re-ignition of the boiler automatics, Ferroli waits 50 seconds, the display lights up "d03".

If one of the ignition attempts was successful (the torch was detected), and then the power supply to the gas valve was lost, then the ignition is repeated according to the scenario described above.

If there is excess moisture in the combustion chamber, then the ignition transformer electrode closes to the ground.

Gas does not flow to the burner

1. Shut-off valve closed. Open all shut-off devices installed on the gas pipe.

2. In case of initial start-up, make sure that air has been bled from the piping.

3. Check the gas inlet pressure upstream of the gas valve. The nominal pressure value is 20 mbar.

4. Check that the Min. and Mach. gas pressure on the nozzles to the recommended nominal values. If necessary, adjust the boiler for gas pressure. Faulty gas fittings (gas valve)

If fault 1 is found, replace the gas valve.

The ionization ignition electrode is faulty or does not work correctly:

1 - Check the ionisation ignition electrode for dirt.

2. - Make sure that the nominal gap (3.0 + 0.5 mm) is set between the burner and the I ignition/ionisation electrode.

3. - Check the electrode cable for mechanical damage.

Faulty gas fittings (gas valve. Ring the gas valve coils for a short circuit and for an open circuit. The resistance of the modulating valve coil should be 24 ohms, shut-off 65 ohms. If a malfunction is detected, replace the gas valve.

Sticky gas valve

Put a piece of silicone hose on the fitting located on the front of the gas valve and apply excess pressure.

Error A02

False flame warning

If, with the burner off, the flame control system, within 20 seconds, detects an ionization current, the Ferroli boiler automation generates an error.

In this case, if there are no current requests for ignition of the burner, the torch symbol flashes, if there is a request, the symbol is on.

Malfunction of the ionization ignition electrode

2. Make sure that there is a nominal (3.0 ±0.5 mm) gap between the burner and the ignition/ionization electrode.

3. Check the electrode cable for mechanical damage.

Too much low power ignition

Adjust the ignition power in the service parameters menu (parameter P01).

1. Faulty ignition transformer

Restart the boiler, if the error persists, replace the control board.

2. Check the quality of the ground. There should be no potential on the case.

Blockage in the presence of excess condensate. Remove excess condensate from the combustion chamber, ignition/ionization electrode and burner.

Malfunction of the ignition-ionization electrode

1. In the absence of combustion, the control board receives a signal about the presence of a flame.

2. Check the wire of the ignition / ionization electrode for mechanical damage and breakage.

3. Check the circuit "Ignition / ionization electrode - Control board short circuit.

4. The ignition/ionization electrode touches the burner. Check the gap between the ignition/ionization electrode of the burner. The nominal clearance is 3.0+0.5 mm.

Control board failure.

Replace control board

Error A03

Ferroli boiler overheating

1. The temperature of the emergency thermostat has exceeded 105 C (if at this moment there is no request for ignition, the error is not registered).

2. The burner went out due to the temperature exceeding in the heating system (90 ° C - in heating mode; 95 C - in test mode and hot water), but the heat exchanger continued to heat up, the automation blocks the boiler if the temperature on the safety sensor exceeds 105 within 10 seconds WITH.

3. If in the heating or frost protection modes the safety sensor detects a temperature above 105C, the boiler automatics starts counting the 30 second interval. If during this time the temperature of 2 sensors (heating temperature, emergency thermostat) does not fall below 100 C, the automation generates an error.

4. Boiler blocking when the burner is requested to be ignited. If at the moment the flame appears, the temperature of the emergency thermostat exceeds 100 C, the automation waits 10 seconds, then generates an error signal.

The combined sensor (RH temperature sensor/emergency thermostat) has tripped and blocked the operation of the boiler

AT wall boilers Domiproject emergency thermostat trips at 105 C. Wait for the Ferroli boiler to cool down; and restart it.

Faulty or malfunctioning overheating sensor

Replace sensor.

Insufficient water circulation in the heating system

Check the pressure in the heating system. Pressure in cold system heating should be = 1.2 bar.

Air in the heating system

Bleed air from the heating system.

There is no circulation in the heating system. Open all shut-off valves that prevent the normal circulation of the coolant.

Circulation pump not working

1. The circulation pump does not gain nominal speed. Check the power supply parameters, the voltage should be 230 ± 23 6.50 Hz. In case of increased or decreased supply voltage, it is recommended to connect the boiler to the mains through an autotransformer-voltage stabilizer. Check the resistance of the stator winding of the pump motor for an open or short circuit

2. The pump is operating normally, but the pressure is not sufficient. Check the pump impeller for mechanical damage. If a malfunction is found, replace the pump

3. Power is supplied to the circulation pump, but it does not rotate. Check the pump for blockage. To do this, unscrew the plug on the front side of the pump and use a slotted screwdriver to turn the rotor shaft of the pump motor several times. If a malfunction is found, replace the pump.

4. The circulation pump is not powered. Malfunction of the control board.

Restart boiler. If the problem recurs, replace the control board.

Error F04

Flue gas thermostat overheating (only in Ferroli boilers Domiproject DC)

If the flue gas thermostat contacts open during boiler operation, the burner immediately goes out and an error signal is generated. After 20 minutes, the microprocessor checks the status of the flue gas thermostat. If the contact is closed, then the burner can start, if the contact is open, the boiler will continue to be in a blocked state.

Flue gas thermostat overheating

Wait until the sensor cools down, restart the boiler.

Control board set incorrectly

During the initial start-up or when replacing the control board, it is necessary to adjust the value of the parameter boz. For open combustion chamber b03=1 (see configuration menu).

1. Increased air resistance in the smoke exhaust system. Check the smoke exhaust system for mechanical impurities. Check the boiler draft interrupter for dirt.

3. Check the end of the chimney for icing.

Faulty flue gas temperature sensor

Replace sensor.

Control board not working properly

Replace control board.

Error F05

Fan not connected (only in Ferroli Domiproject DF boilers) When the burner is requested to be ignited, the control equipment checks the fan load.

If the load is not detected, then after 15 seconds the automation generates an error. During operation and the presence of ionization, the absence of fan load leads to an immediate shutdown of the discharges for ignition of the burner. If the connection is not restored within 15 seconds, a fault signal is generated.

Error A06

Extinguishing the flame 6 times within 10 minutes

The condition under which the flame is considered extinguished is that the burner has been operating for at least 10 seconds and the flame signal suddenly disappears. If this situation is repeated 6 times within 10 minutes of operation, the boiler automation generates an error A06.

Check inlet gas pressure.

1. Nominal gas inlet pressure must be 20 mbar.

2. Check whether the Min. and Mach. gas pressure on the nozzles to the recommended nominal values. If necessary, adjust the boiler for gas pressure.

The ignition / ionization electrode does not work correctly or is faulty

If necessary, replace the ignition/ionization electrode.

The fan blows out the flame on the burner

1. The diaphragm of the smoke exhaust system is incorrectly selected. Replace diaphragm.

2. The fan is not working properly. Check the voltage supplied to the fan (the voltage should be 220 V).

Malfunction of the control board

Restart boiler.

Error F08

Overheating of the heat exchanger

When the temperature in the heating circuit exceeds 99 C (for 5 seconds), the temperature sensor of the extract air is activated. The error disappears when the coolant temperature drops to 90°C

The control is carried out by an overheating sensor and an RH temperature sensor.

The error is stored in the error history menu. It is not displayed on the display and Ferroli does not block the boiler.

The error is registered by the temperature sensor

Error F08 has the same causes as A03, occurs before the appearance of error A03. You can find out that error F08 occurred during operation by entering the Hi error history menu (see the service parameters menu).

Error F10/F14

Short circuit or break in the target of the heating water temperature sensor

If there is a short circuit or a break in the target of the RH temperature sensor (the signal disappears for 3 seconds), a command is sent from the control board to turn off the burner.

Malfunction of the safety NTC sensor of the heating circuit

The combined extract air temperature sensor consists of 2 identical sensors, both sensors have an overheating protection function. Failure of one of the sensors (short circuit or target break for 3 seconds) entails the shutdown of the burner ignition commands.

Faulty semiconductor NTC temperature sensor OB

1. Check the resistance of the semiconductor sensor. Nominal sensor resistance at room temperature-10 KΩ

2. Short circuit in the circuit "RH temperature sensor - control board", replace the sensor if necessary.

3. No signal between the contacts of the RH temperature sensor and the control board connector. Disconnect the RH temperature sensor connector from the control board connector connector, and then reconnect them for normal contact.

Error F11

Short circuit or open circuit of the DHW sensor

If there is a short circuit or open circuit in the DHW temperature sensor circuit (lasting 3 seconds). The burner will not ignite only in DHW mode. The Ferroli boiler is able to continue working in heating mode.

Faulty NTC sensor (thermistor) DHW temperature

1. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor at room temperature is 10 kOhm.

3. Check the control board connector.

Error A16

Gas valve malfunction

If the burner flame does not go out within 5 seconds after the gas valve is closed, the boiler automation generates a malfunction signal.

Faulty gas fittings (gas valve) Ring the gas valve coils for an interturn short circuit and for an open circuit. The resistance of the modulating valve coil should be = 24 ohms, shut-off 65 ohms. If a malfunction is found, replace the gas valve.

Error F20

The error is related to combustion quality control (only in Domiproject D F boilers)

Combustion control is carried out by measuring the resistance of the flame.

The smoke exhaust system is not working properly

1. Increased air resistance in the smoke exhaust system. Check the smoke exhaust system for mechanical impurities. Check the boiler draft interrupter for dirt

2. During the initial installation, take into account the design features of the smoke exhaust system. It is necessary to install the smoke exhaust system in such a way as to exclude the occurrence of turbulence of air flows and the occurrence of reverse draft.

Faulty or malfunctioning fan

1. Check the fan wires for mechanical damage.

2. Measure the voltage supplied to the fan (the voltage should be 220V).

3. Check the connection of the connectors to the fan contacts.

Faulty or malfunctioning gas valve

Ring the gas valve coils for an interturn circuit and for an open circuit. The resistance of the modulating valve coil should be = 24 ohms. shut-off 65 Ohm. If a malfunction is found, replace the gas valve. Faulty or incorrectly working ignition/ionization electrode

If necessary, replace the ionization ignition electrode. The control board is faulty or not working properly. Restart the Ferroli boiler, if the error occurs again, replace the control board

Error F34

Low voltage in the network (alternating current) has dropped below 180 V, the boiler automation generates an error. The error is eliminated as soon as the voltage rises above 185 V.

Low voltage in the power supply network

Check the power supply settings. If the network parameters do not correspond to the nominal values ​​(2206/50 Hz), install an autotransformer-voltage stabilizer.

Error F35

Current frequency error

The control board operates on AC 50Hz/60Hz. If there is a discrepancy between the selected frequency and the current frequency in the network, the boiler automation generates an error.

Selected frequency of non-consumed current

In case of initial start-up or replacement of the control board, the value of parameter b06 must be selected.

Error F37

Pressure drop in the heating system

The pressure switch contacts have opened for more than 5 seconds.

The pressure in the heating circuit has dropped below 0.8 bar.

1. Coolant leakage in the heating system. Check the heating system for leaks. Repair leaks and energize the system.

2. Faulty pressure switch RH. Replace the RH pressure switch if necessary.

Error F39

Short circuit or open sensor outdoor temperature

The error occurs if an outdoor temperature sensor is connected and the weather-compensated control function is active. A sensor failure does not result in the shutdown of the burner ignition commands.

Faulty semiconductor NTC sensor (thermistor) outdoor temperature

1.Check the resistance of the semiconductor sensor.

2. Short circuit in the "Temperature sensor - control board" target, replace the sensor if necessary.

3. Check the quality of the connection between the terminal clamp and the outdoor temperature sensor wire.

Error A41

Lack of dynamics of temperature change (coolant or DHW water) for a given time interval Combustion control is carried out by measuring the resistance to plans.

Malfunction or short circuit of one of the temperature sensors

Faulty semiconductor MTS sensor (thermistor) of the temperature of the OB

1.Check the resistance of the semiconductor sensor. Nominal resistance of the sensor 10 kOhm at a temperature of 25 C

2. Short circuit in the circuit “Exhaust temperature sensor control board, if necessary, replace the sensor.

3. There is no signal between the contacts of the RH temperature sensor and the control board connector. Disconnect the RH temperature sensor connector from the control board connector connector, and reconnect them again for normal contact.

Faulty MTS sensor (thermistor) of DHW temperature

1. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor is 10 kOhm.

2. Short circuit of the DHW temperature sensor.

Error F42

Protection in case of difference between the readings of the sensor for overheating of the heating water and the temperature sensor of the heating water (combined sensor)

If the difference in readings between the emergency thermostat and the RH temperature sensor in absolute value exceeds 12°C, the boiler automation generates an error.

1. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor is 10 kOhm.

2. Short circuit of HPS temperature sensor

3. Check the quality of the connection, the DHW temperature sensor connector with the control board.

Faulty NTC sensor (thermistor) of DHW temperature

1. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor is 10 kΩ.

2. Short circuit of the DHW temperature sensor

3. Check the quality of the connection of the DHW temperature sensor connector with the control board.

Error F50

Gas valve modulation coil failure

If the current strength on the modulation coil is below the minimum threshold, or the circuit is open, the Ferroli boiler automation generates an error.

Faulty gas fittings (gas valve)

Ring the gas valve coil for an interturn circuit and for an open circuit. The resistance of the modulating valve coil should be = 24 ohms. Control board failure. Restart boiler. If the error reappears, replace the control board.

Error A51

Malfunction of the air intake / smoke exhaust system

An error occurs if the heater goes out within 10 seconds after the control time has elapsed. Before restarting the boiler, the automation maintains a pause "d4" lasting 5 minutes.

The smoke exhaust system is not working properly

1. Increased air resistance in the smoke exhaust system. Check the smoke exhaust system for mechanical contamination. Check the boiler draft interrupter for dirt.

2. During the initial installation, take into account the design features of the smoke exhaust system. It is necessary to install the smoke exhaust system in such a way as to exclude the occurrence of turbulence of air flows and the occurrence of reverse draft.

Faulty or incorrect fan (Ferroli DomiprojectDF)

1. Check the fan wires for mechanical damage.

2. Measure the voltage supplied to the fan (the voltage should be 220V).

3. Check the connection of the connectors to the fan contacts.

Faulty gas fittings (gas valve). Ring the gas valve coils for an interturn circuit and for an open circuit. The resistance of the modulating valve coil should be = 24 ohms, shut-off 65 ohms. If a malfunction is found, replace the gas valve.

The ignition / ionization electrode is faulty or does not work correctly:

1. Check the ignition/ionization electrode for dirt.

2. Make sure there is a nominal (3.0+03 mm) gap between the burner and the ignition/ionization electrode.

3. Check the electrode cable for mechanical damage.

Malfunction or malfunction of the control board

1. Restart the boiler, if the error reappears, replace the control board.

2. Check the quality of the ground. There must be no potential on the boiler body.

Detailed description of errors F20, F41

F20 - Combustion quality control

During the operation of the burner, and in the normal mode, the ignition / ionization electrode constantly controls combustion. This is done by measuring the resistance of the flame (the fan stops for about 1 second) in relation to the power level of the burner current calculated by the boiler automatics.

Those. after each ignition of the burner, after 1 minute, the first check is carried out: if a positive result is obtained, then the equipment waits 1 minute before the next control. If the result is negative, then the waiting time before the next check will be 2 minutes.

In addition, if a negative result is obtained, and the boiler automation determines that the measured parameters do not correspond to high-quality combustion, then an attempt will be made to restore the correct parameters by changing the modulation current: this is accompanied by a flashing torch symbol. If the adjustment is successful, the burner can continue to work.

Otherwise, the flame will go out, the display will show error message F20 and the fan will turn on. After about 50 seconds the error is canceled and the boiler automatics ignites the burner.

F41 - Lack of temperature change dynamics (heat carrier or DHW water) in a given time interval

Heating mode

With each new request for heating power, the temperature determined by the sensor in the pressure circuit is monitored. If this temperature changes by ± 1 C during the first 20 seconds after the request is received, and the burner has been turned off, then the system takes this as a positive test result.

If the temperature, determined by the pressure circuit sensor, does not change by ± 1 C during the first 20 seconds after the request arrived when the burner was turned off, then the system perceives this as a negative result of the test and performs a second test, until which no alarms are generated. generated. When a request is made to ignite the burner, a timer is activated,
which counts 15 seconds from the moment the gas valve opens.

If during this time the temperature determined by the pressure circuit sensor changes by ± 1C, then for the control system this means that the check gave a positive result and the start cycle can continue, and, accordingly, there will be no more checks during this cycle of heating power demand. Otherwise, the system extinguishes the burner and after 35 seconds starts a second ignition attempt, which lasts no more than 20 seconds from the moment the gas valve is opened.

If during this time the temperature detected by the pressure circuit sensor changes by ± 1C, then for the control system this means that the check gave a positive result and the start cycle can continue, and, accordingly, there will be no more checks during this cycle of heating demand . Otherwise, the control system extinguishes the burner and after 40 seconds starts the third ignition attempt, which lasts no more than 25 seconds from the moment the gas valve opened.

If during this time the temperature detected by the pressure circuit sensor changes by ±1C. then for the control system this means that the check has given a positive result and the start-up cycle can continue, and, accordingly, there will be no more checks during this heating power request cycle. Otherwise, the burner goes out and the flame control equipment generates a fault message no. 41 and blocks the boiler (restart).

The pump continues to be commanded for the programmed overrun time. In frost protection or test modes, the boiler automation behaves in the same way as described above, but with a different duration of the waiting intervals of 15 and 20 instead of 35 and 40 seconds.

Publication date 01/30/2015

In this article, we will consider errors and malfunctions that may occur during operation. Ferroli DOMIproject F 32.

The boiler is equipped modern system self-diagnosis. In the event of one or another malfunction of the boiler, the malfunction code will be displayed using 3 LEDs. Some malfunctions lead to a permanent blocking of the boiler: In this case, manually reset the blocking by pressing the RESET button and keeping it pressed for 1 second or by pressing the RESET button on the remote control device with timer (option), if installed; if the boiler does not turn on, it is necessary to eliminate the fault indicated by the LEDs.

Other malfunctions lead to a temporary blocking of the boiler, which is removed automatically as soon as the value that caused the blocking operation returns to the allowable limits.

1. The burner has not ignited.

Green - off;

Yellow - off;

Red - flashes quickly.

1. Lack of gas = Check the regularity of gas supply to the boiler and that the pipes are bled.

2. Faulty follower/ignition electrode = Check that the electrode wires are connected correctly, that it is installed correctly and that there are no deposits on it.

3. Faulty gas valve = Check and replace gas valve.

4. Ignition power too low = Adjust ignition power.

2. The overheating protection has tripped.

Green - off;

Yellow - off;

Red - flashes quickly.

Possible reasons malfunctions and ways to eliminate them:

1. Damaged heating water temperature sensor = Check the installation and operation of the heating water temperature sensor.

2. No water circulation in the system = Check circulation pump.

3. Air in the system = Bleed the air out of the system.

3. Signaling about the presence of a flame in its absence on the burner.

Green - on;

Yellow - off;

Red - off.

Possible causes of the malfunction and how to eliminate them:

1. Electrode failure = Check electrical connections ionizing electrode.

2. Board failure = Check board.

4. Air pressure switch (its contacts do not close 60 seconds after the fan is turned on).

Green - fast blinking;

Yellow - off;

Red - off.

Possible causes of the malfunction and how to eliminate them:

1. Air pressure switch contacts open = Check for correct wiring.

2. Incorrect connection of the air pressure switch = Check the fan.

3. Wrong diaphragm = Check pressure switch.

4. Chimney missized or clogged = Replace orifice.

5. Insufficient pressure in the system.

Green - off;

Yellow - fast blinking;

Red - off.

Possible causes of the malfunction and how to eliminate them:

1. System drained of water = Refill system with water.

2. Water pressure switch not connected or defective = Check sensor.

6. Malfunction of the temperature sensor of the water supplied to the heating system.

Green - off;

Yellow - fast blinking;

Red - flashes quickly.

Possible causes of the malfunction and how to eliminate them:

7. Faulty DHW temperature sensor.

Green - fast blinking;

Yellow - fast blinking;

Red - off.

Possible causes of the malfunction and how to eliminate them:

1. Sensor damaged = Check sensor wiring is correct or replace sensor.

2. Short circuit in the connecting cable = Broken connecting cable.

8. Heat exchanger protection has tripped. (LEDs flash alternately).

Green - off;

Yellow - fast blinking;

Red - flashes quickly.

Possible causes of the malfunction and how to eliminate them:

1. No H2O circulation in system = Check circulation pump.

2. Air in the system = Bleed the air out of the system.

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Ferroli boiler errors and their codes

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Possible errors and causes

This article contains all possible malfunctions and options for their elimination, as well as error codes for Ferroli boilers. All information is read in the following order: code - name - possible malfunction. If you have any additional questions, please leave them in the comments to this article.

Error A01 - There is no signal about the presence of a flame.

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The number of ignition attempts is assumed, which directly depends on the type of combustion chamber and the gas used.

Error A02 - False signal about the presence of a flame.

If the burner is off and the flame control system is in the interval of 20 sec. finds the ionization current, then the automation of the Ferroli boiler fixes an error. If there are currently no requests to ignite the burner, the torch icon flashes, if there is a request, the icon is on.

Error A03 - Overheating of the Ferroli boiler.

The error occurs if the emergency thermostat overheats. If the burner does not work at the moment of overheating, the error will not occur.

  1. The temperature of the emergency thermostat is more than 105 C (if there are no requests for ignition at the current time, the error is not fixed).
  2. The burner went out due to high temperature in heating system(90C - in heating mode; 95C - in test and hot water mode), but the heat exchanger continues to heat up, the automation blocks the boiler if in 10 seconds. the temperature on the protection sensor will be more than 105 C.
  3. If the safety sensor registers a temperature of more than 105C (heating / frost protection mode), the boiler automatics will count down a 30 second interval. If during this period the temperature of two sensors (heating temperature and emergency thermostat) does not drop to 100C, the automation generates an error.
  4. The boiler is blocked when a burner ignition request occurs. If during the occurrence of a flame the temperature of the emergency thermostat is above 100 C, the automation enters a 10-second standby mode, and only then issues an error signal.

Error A06 - Extinguishing of the flame 6 times within 10 minutes.

Low pressure in the gas circuit. Check gas inlet pressure. The nominal gas inlet pressure must be 20 mbar.

Ignition/ionization electrode damaged or not functioning properly - Replace ignition/ionization electrode if necessary.

The fan blows out the flame on the burner. The fan is not working properly. Check the voltage supplied to the fan (the voltage should be 220 V).

Malfunction of the control board. Restart boiler. If the error persists, replace the control board.

Error A09 - Faulty gas valve.

During operation, the automation monitors the operation of the gas valve (checks the current). If a discrepancy is found, a fault signal is generated.

Break in the gas valve power wire. Check gas valve wires for damage.

Faulty gas fittings (gas valve). Ring the gas valve coils for an interturn circuit and for an open circuit. The resistance of the coil of the modulating valve should be ≈24 Ohm, shut-off 65 Ohm. If a malfunction is found, replace the gas valve.

Error A16 - Malfunction of the gas valve.

If the burner flame does not go out within 5 seconds after closing the gas valve, the boiler automation generates a malfunction signal.

Faulty gas fittings (gas valve) - Ring the gas valve coils for an interturn circuit and for an open circuit. The resistance of the modulating valve coil should be = 24 ohms, shut-off 65 ohms. If a malfunction is found, replace the gas valve.

Error A23 / A24 - Failure of the board parameters.

The value of the email parameter is incorrect. fees.

Error A41 - Lack of temperature change dynamics (coolant or DHW water).

Preset time interval Combustion control is carried out by measuring the resistance to plans.

Error A51 - A malfunction in the air intake / smoke exhaust system.

An error occurs if the heater goes out within 10 seconds after the control time has elapsed. Before restarting the boiler, the automation maintains a pause "d4" lasting 5 minutes.

Error F04 - Flue gas thermostat overheating (Ferroli Domiproject DC).

If the contacts of the flue gas thermostat are disconnected during the operation of the boiler, the burner immediately goes out and gives an error signal.

After 20 minutes, the microprocessor monitors the status of the flue gas thermostat. If the contact is closed, the burner will start. If there is no contact, the boiler will remain blocked.

Increased air resistance in the smoke exhaust system. Check the smoke exhaust system for mechanical impurities. Check the boiler draft interrupter for dirt.

Flue gas thermostat overheating - wait for the sensor to cool down and restart it.

There is a pullback. When installing, consider the "wind rose" of your area.

Incorrect setting of the control board. When starting for the first time or when replacing the control board, it is recommended to set the value of parameter b03. For open combustion chamber b03=1.

Error F05 - The fan is not connected (only in Ferroli Domiproject DF boilers).

When a burner ignition is requested, the control equipment checks the fan load. If the load is not detected, then after 15-20 seconds the automation generates an error. During operation and the presence of ionization, the absence of fan load leads to an immediate shutdown of the discharges for ignition of the burner. If the connection is not restored within 15-20 seconds, a fault signal is generated.

If the error occurred during the initial start-up of the boiler, the chimney may not have been installed correctly.

  1. Check the polarity of connecting the connectors to the contacts of the air pressure switch.
  2. The diaphragm is incorrectly matched to the boiler (the diaphragm allows narrowing the cross section of the smoke exhaust channel). Replace diaphragm. When choosing a diaphragm, be guided by the instructions for the boiler.

Error F08 - Overheating of the OB heat exchanger.

When the temperature in the heating circuit exceeds 99 C (for 5 seconds), the temperature sensor of the extract air is activated. The error disappears when the coolant temperature drops to 90°C.

The control is carried out by an overheating sensor and an RH temperature sensor. The error is stored in the error history menu. It is not displayed on the display and Ferroli does not block the boiler. The error is registered by the OB temperature sensor.

Error F08 has the same causes as A03, occurs before the appearance of error A03. You can find out that error F08 occurred during operation by entering the Hi error history menu (see the service parameters menu).

Error F10 / F14 - Short circuit or break in the target of the heating water temperature sensor.

If there is a short circuit or a break in the target of the RH temperature sensor (the signal disappears for 3 seconds), a command is sent from the control board to turn off the burner.

Check the resistance of the semiconductor sensor. The nominal resistance of the sensor at room temperature is ~10 kOhm.

Short circuit in the circuit "RH temperature sensor - control board", replace the sensor if necessary.

No signal between the contacts of the RH temperature sensor and the control board connector. Disconnect the RH temperature sensor connector from the control board connector connector, and then reconnect them for normal contact.

  • Short circuit in the connecting cable;
  • Breakage of the connecting wire.

Error F11 - Short circuit or open circuit of the DHW sensor.

If there is a short circuit or open circuit in the DHW temperature sensor circuit (lasting 3 seconds). The burner will not ignite only in DHW mode. The Ferroli boiler is able to continue working in heating mode.

Error F14 - Malfunction of the NTC safety sensor of the heating circuit.

The combined extract air temperature sensor consists of 2 identical sensors, both sensors have an overheating protection function. Failure of one of the sensors (short circuit or open circuit for 3 seconds) entails the shutdown of the burner ignition commands. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor is 10 kOhm.

Short circuit of the temperature sensor OB. Check the connection quality of the RH temperature sensor connector with the control board.

Error F20 - Combustion control.

The error is related to combustion quality control (only in Domiproject D F boilers).

Combustion control is carried out by measuring the resistance of the flame.

The smoke exhaust system is not working properly.

The fan is defective or not working properly.

The gas valve is defective or not working properly.

Low voltage in the network (alternating current) has dropped below 180 V, the boiler automation generates an error. The error is eliminated as soon as the voltage rises above 185 V.

Error F35 - Current frequency error.

The control board operates on AC 50Hz/60Hz. If there is a discrepancy between the selected frequency and the current frequency in the network, the boiler automation generates an error.

Error F37 - Pressure drop in the heating system

The pressure switch contacts have opened for more than 5 seconds. The pressure in the heating circuit has dropped below 0.8 bar.

Coolant leakage in the heating system. Check the heating system for leaks. Repair leaks and energize the system.

Faulty pressure switch OB. Replace the RH pressure switch if necessary.

Error F39 - Short circuit or open circuit of the outdoor temperature sensor

The error occurs if an outdoor temperature sensor is connected and the weather-compensated control function is active. A sensor failure does not result in the shutdown of the burner ignition commands.

Error F43 / F41 - Operation of the heat exchanger protection.

The fault occurs in both heating and DHW mode. If, when the burner is switched on, the heating intensity of the heat exchanger is higher than that set by parameter (P15), the extract air temperature sensor signals a fault. The burner is turned off with a delay, (12 s. - in heating mode; 20 s. - in DHW mode, 0 s. - in Comfort mode. The error resolves itself as soon as the temperature of the heating circuit sensor drops to 45 ° C.

  • There is no coolant circulation (the pipeline is clogged, the pump is faulty);
  • The presence of air in the heating system;
  • Same reasons as A03.

Error F42 - Protection in case of a difference in the readings of the sensor for overheating of the heating water and the temperature sensor of the heating water (combined sensor)

If the difference in readings between the emergency thermostat and the RH temperature sensor in absolute value exceeds 12°C, the boiler automation generates an error.

Error F50 - Malfunction of the gas valve modulation coil

If the current strength on the modulation coil is below the minimum threshold, or the circuit is open, the Ferroli boiler automation generates an error.

Ferroli Floor Boiler Faults and Troubleshooting

If you are not 100% sure what exactly the problem is and that you can solve it, immediately contact service center for troubleshooting and troubleshooting.

Damaged or incorrectly functioning ionization ignition electrode

  1. Check the ionisation ignition electrode for dirt.
  2. Make sure that there is a nominal (3.0 + 0.5 mm) gap between the burner and the ignition/ionization electrode.
  3. Check the electrode cable for the presence of mech. damage.

Fault in the gas valve. Check gas valve coils. Possible short circuit or break. The resistance of the modulating valve coil is 24 ohms, the shut-off valve is 65 ohms. If damage is fixed, replace the gas valve.

Insufficient ignition power

  1. Adjust the ignition power in the service menu (parameter P01).
  2. Malfunction or damage to the control board - The ignition transformer does not work.
  3. Restart the machine, if the error persists, replace the control board.
  4. Check grounding - There should be no potential on the case.
  5. Too much condensate leads to blockage - Clean the combustion chamber of condensate, as well as from the ignition / ionization electrode and burner.

Violation of the ignition-ionization electrode

  1. When there is no combustion, the control board detects the presence of a flame.
  2. Check the wires of the ignition / ionization electrode for mechanical damage and breaks.
  3. Check circuit Ignition/ionization electrode - control board for short circuit.
  4. The ignition/ionization electrode is in contact with the burner.
  5. Faulty control board - replace.

Ignition sequence

  1. First attempt: voltage is connected to the gas valve and the ignition transformer (P01).
  2. If a flame is found, then the boiler automation starts to control the modulation. If no flame is found, a second ignition attempt is made at the end of the d03 break.
  3. At each next start, the sequence of automation functions is the same as described earlier. If, upon completion of all ignition attempts, the flame is not found, the automation gives a malfunction signal, error A01 lights up on the screen.
  4. If the ignition of the burner is successful, but then the flame goes out, then before starting the ignition again, the Ferroli boiler automatic waits for about 50 seconds, d03 lights up on the screen.
  5. If one of the burner starts was successful (the torch was found), and then the power supply to the gas valve disappeared, then the ignition must be repeated.
  6. If there is excess moisture in the combustion chamber, the ignition transformer electrode will short to ground.

No gas flow to burner

  1. Shut-off valve cover. Open all shut-off elements that are installed on the gas pipe.
  2. If a first start-up is being carried out, check that the air has been bled from the piping.
  3. Check the incoming gas pressure in front of the gas fittings. The standard pressure is 20 mbar.
  4. Check whether the set min. and max. gas pressure on the nozzles to the required standard values. And if necessary, adjust the boiler for gas pressure.

No flame on burner

Insufficient gas pressure in the gas pipeline or its absence.

  1. Check the gas inlet pressure upstream of the gas fitting.
  2. Air pollution of the gas pipeline. Check that air has been bled from the gas line.
  3. Gas valve defective. Check the gas valve and replace if necessary.

Clogged main burner nozzles

  1. Clean the main and pilot burner nozzles.
  2. Gas valve defective. Replace if necessary.
  3. One of the safety devices has tripped.

Gas valve malfunction

If a fault is found, replace the gas valve.

Sticky gas valve

Put on the fitting, which is located on the front of the gas valve, a piece of silicone hose and create excess pressure.

Pilot burner does not ignite

Gas does not flow to the burner, insufficient gas inlet pressure

  1. There is no gas.
  2. The gas supply valve is closed.
  3. The presence of air in the pipeline. Bleed the air.
  4. Insufficient gas pressure. Check gas inlet pressure.
  5. Adjust gas pressure.

Blockage in the gas supply system

  1. Pilot burner nozzle clogged. Clean the nozzle with compressed air.
  2. Clogged gas valve filter.

Low voltage in the power supply network

Check the power supply settings. If the network parameters do not correspond to the nominal values ​​(2206/50 Hz), install an autotransformer-voltage stabilizer.

Insufficient pilot burner flame

Insufficient inlet gas pressure

  1. Check the gas pressure in the gas pipeline - adjust the gas pressure on the pilot burner.
  2. Pilot burner nozzle dirty - clean the nozzle with compressed air.

The combined sensor (RH temperature sensor/emergency thermostat) switched on and stopped the boiler operation.

  1. The emergency thermostat in wall-mounted boilers Ferroli Domiproject turns on at a temperature of 105C. You need to wait for the device to cool down and restart it.
  2. Malfunction or incorrect operation of the overheating sensor - replace the sensor.
  3. Weak water circulation in the heating system - check the pressure in the heating system. In a cold heating system, the pressure is 1.2 bar.
  4. Air in the heating system - de-air the system.
  5. No circulation in the heating system - open all shut-off valves that interfere with the required circulation of the coolant.

Malfunction of the circulation pump

  1. Circulation pump does not reach the required speed. Check the characteristics of the electrical network, rated voltage - 230 ± 23 6. 50 Hz. In case of power surges, connect the boiler to the network through an autotransformer-voltage stabilizer. Check the resistance of the stator winding of the pump motor for an open or short circuit.
  2. The pump is operating normally, but there is not enough pressure. It is possible that there is mechanical damage on the pump impeller. If damage is found, replace the pump.
  3. The supply to the circulation pump is normal, but rotation does not occur. Check pump for blockage. To do this, unscrew the plug from the front side of the pump and turn the pump motor rotor shaft with a screwdriver.
  4. Nutrition circulation pump missing - the control board is damaged. The boiler needs to be restarted. If the problem persists, replace the control board.

Optional shutdown of the pilot burner

Insufficient inlet gas pressure - check the gas pressure in the gas pipeline.

Pilot burner system defective or not working correctly

  1. Pilot burner nozzle dirty.
  2. The thermocouple is defective. Replace thermocouple.
  3. Nozzle dirty. Clean the nozzle with compressed air.
  4. Check for a short or "open" in the gas valve coil responsible for the operation of the pilot burner.
  5. Broken wire connection between thermopile and gas valve coil.

Flashes of flame in the main burner; poor gas combustion

  1. Insufficient air flow into the room.
  2. The combustion chamber is dirty.
  3. Burner dirty - check burner for dirt and clean if necessary.

Heating water temperature does not increase

  1. Insufficient inlet gas pressure.
  2. Poor heat removal from the heat exchanger.
  3. Insufficient boiler power.

The boiler does not maintain the set temperature.

Control thermostat defective - replace thermostat.

Malfunction or short circuit of one of the temperature sensors (thermistor for the temperature of the OB / DHW)

  1. Check the resistance of the semiconductor sensor. The nominal resistance of the sensor is 10 kOhm at a temperature of 25 C.
  2. Short circuit in the circuit “Exhaust temperature sensor control board, if necessary, replace the sensor.
  3. There is no signal between the contacts of the RH temperature sensor and the control board connector. Disconnect the RH temperature sensor connector from the control board connector connector, and reconnect them again for normal contact.
  4. Short circuit of the DHW temperature sensor - check the quality of the connection of the DHW temperature sensor connector with the control board.

Malfunction of the safety NTC sensor of the heating circuit

The combined extract air temperature sensor consists of 2 identical sensors, both sensors have an overheating protection function. A malfunction of one and the sensors (short circuit or target break for 3 seconds) entails the shutdown of the commands to ignite the burner.

Faulty or malfunctioning fan

  1. Check fan wires for mechanical damage.
  2. Measure the voltage supplied to the fan (the voltage should be 220 V).
  3. Check the connection of the connectors to the fan contacts.

The smoke extraction system is not working properly

  1. Too high air resistance in the smoke extraction system. Check the smoke exhaust system and the boiler draft interrupter for mechanical impurities.
  2. When carrying out installation, it is necessary to take into account the design features of the smoke exhaust system. It is required to install a smoke exhaust system with the condition that there are no turbulences of air flows and no reverse draft occurs.
  3. Check the final section of the chimney for icing.
  4. The flue gas temperature control sensor is damaged - replace the sensor.
  5. Control board malfunctioning - replace control board.

2017-04-28 Evgeny Fomenko

The device and principle of operation of Ferroli boilers

Ferroli gas boilers are of high quality and reliability in operation. Can work on natural and liquefied gas. The operation of the boiler can be controlled directly from the device and remotely. Equipped with a self-diagnosis system, which minimizes human intervention.

Possess high efficiency 92%. The principle of operation of Ferroli boilers is to heat the heat exchanger with thermal energy obtained as a result of gas combustion. Distinctive feature- the presence of a microprocessor control system, with the help of which the flame is controlled.

The copper heat exchanger is coated with an anti-corrosion aluminum composition, this type of heat exchanger is patented by Ferroli. The combustion chamber is steel or copper, covered with anti-corrosion aluminum composition, with an internal environmental coating.

Equipped with an injection burner, the heads of which are made of stainless steel. The most popular models on the market are double-circuit boilers Diva, Divatop, Domiproject and Ferroli Domina 24.

Boiler Ferroli Domina 24

Domiproject has a "pipe in pipe" bithermic heat exchanger, a by-pass circuit in the heating system, and a display on the front panel. Domina is equipped with a copper bithermic heat exchanger of increased power, by-pass system, light indication. Operates on both natural gas and LPG.

Basic error codes

During the operation of the boiler, failures and malfunctions may occur, the codes of which are displayed on the display of the device. Error codes with the symbol “a” lead to the blocking of the boiler, they can be reset manually by pressing and holding the REZET button for 1 second. Codes with the symbol "f" are reset automatically, after the malfunction has been eliminated. The most common malfunctions on the Ferroli gas boiler are: lack of ignition (a01), smoke thermostat operation (f04).

01

Error 01 - no ignition of the burner, the boiler does not turn on. Possible causes and how to fix them are described below.

No gas flow:


Faulty ignition electrode:


On Domina boilers, when this code occurs, two indicators do not light, red flashes.

02

Error 02, blocking - a false signal about the presence of a flame when the burner is off on the Ferroli, Domina and Domiproject models, the reasons for its occurrence:

Faulty ignition electrode:

  • Inspect the wires connecting the electrode and the board, measure the circuit between them for a short circuit.
  • Check gap between electrode and burner, adjust if necessary.

The control board may be defective. in this case, it must be replaced. On Domina boilers, when this code occurs, one indicator is off, yellow is on, red is flashing.

03

Error 03 means boiler overheating, appears if the thermostat has overheated. The code will not appear if the burner was not working at the time of overheating. The safety device is activated when the temperature in the heating circuit exceeds 90 degrees, and the temperature of the hot water supply is more than 95 degrees.

Ferroli boiler thermostat

In the Ferroli Domiproject C24 mounted models, the sensor is triggered at a temperature of 105 degrees. If the unit does not start after cooling down, the following malfunctions are possible.

Sensor failure:

  • Wait for the unit to cool down and restart it.
  • Inspect the mechanical connections of the sensor, troubleshoot.
  • Check the sensor for a short circuit and open circuit, if defective, replace.

The circulation pump is running at partial power:


No coolant circulation:


On Domina boilers, when this code occurs, one indicator does not light, green flashes, red flashes

04

Error 04 appears when the smoke exhaust thermostat is triggered, the burner goes out, the boiler is blocked. After 20 minutes, the automation checks the thermostat, if its contact is closed, the boiler remains in a blocked state.


8

Error 8 or error f08 appears when the heat exchanger overheats, when the coolant temperature exceeds 99 degrees and disappears at a temperature of 90 degrees. This code appears before code 03, is not fixed on the display, can only be seen in the code history. Causes and remedies are the same as when code 03 appears.

51

Error 51 indicates problems with smoke removal. The causes and remedies are similar when code 04 appears.

a01

Error a01 - no ignition of the burner on models with a display, the boiler does not turn on. Why it appears and how to eliminate it is described in code 01.

a03

The reasons for the appearance of error a03 are the same as for code 03 on boilers with light indication, it is eliminated in the same way.

Boiler temperature control

a06

Error a06 lights up in the absence of a flame some time after ignition, when the flame goes out 6 times within 10 minutes.

Occurs in the following cases:


a08

Error a08 is overheating of the heat exchanger. Why it appears and how to fix the situation is described above in the description of error 08.

a21

Error a21 means a malfunction of the combustion control system on Ferroli Domiproject boilers. With this error, the boiler may periodically light up and fade.


a51

Error a51 warns of problems in the smoke exhaust system. See the description of error 04 for the reasons for its appearance and ways to solve the problem.

d1

Error d1 is not a malfunction of the boiler, the code means a delay before the next start.

d2

Error d2 is not caused by any malfunction, this parameter means the waiting time before the next heating cycle of the heating system.

d3

The parameter d3 is not an error, it means a waiting time, about 50 seconds, before the next ignition.

d4

Before restarting the boiler, the display shows the code d4, which is not an error, it means a pause between starts of 5 minutes.

f04

Error f04 appears in Ferroli Domiproject DC devices if the exhaust gas removal thermostat is overheated.

Exhaust thermostat

  • Broken chimney draft. Clean out the chimney.
  • Chimney installed incorrectly. During installation, it is necessary to take into account the design features that exclude air turbulence and reverse flow.
  • Sensor failure. Check the mechanical connection of the sensor wires to the control board. Check the sensor with a multimeter, if necessary, replace it.
  • Faulty board. If all of the above is in good condition and after restarting the boiler gives the same error, check the board, in case of a malfunction, replace it.

f05

When the boiler is started, the fan does not turn on, the system generates an error f05 (f05).


f10

Error f10 indicates a sensor malfunction in the supply circuit.

  • Sensor damage. Ring the sensor contacts, if it is faulty, replace it with a new one.
  • Short circuit or open circuit in connecting wires. Check with a multimeter for a short circuit, check the reliability of the connections.