Hefest Gas Boiler Error Codes Error code E2 It indicates that the ignition of the burner is blocked. The flame ionization sensor signals a boiler failure. This component recognizes the presence of a flame and stops the operation of the Gefest boiler during insufficient combustion of the main burner or when there is a gas supply failure. Blocking occurs after the completion of three unsuccessful starts. To resume the workflow, it is recommended that you keep the restart button pressed.
Hefest Boiler Error Code Solutions
Gas valve malfunction – The gas valve is electronically controlled. Diagnostics of this element is carried out by determining the magnitude of voltage and resistance. If it is found that the values do not correspond to the nominal characteristics, the valve should be replaced with a new one. Lack of gas flow to the device – There is a valve in the gas distribution system, which restricts the flow of gas fuel. Therefore, a malfunction at the time of starting the device may occur due to a closed valve.
Incorrect contact or no signal from the flame ionization sensor. The electronic board is damaged – If ignition is carried out correctly, but the unit immediately goes out, then the control board may not recognize the flame. Based on this, it is required to perform its diagnostics. Refusal to ignite. This code may occur when the ignition mechanism is not working or the burner flame is fading. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation. a malfunction at the time of starting the device may occur due to a closed valve. Incorrect contact or no signal from the flame ionization sensor.
The electronic board is damaged – If ignition is carried out correctly, but the unit immediately goes out, then the control board may not recognize the flame. Based on this, it is required to perform its diagnostics. Refusal to ignite. This code may occur when the ignition mechanism is not working or the burner flame is fading. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation. a malfunction at the time of starting the device may occur due to a closed valve. Incorrect contact or no signal from the flame ionization sensor.
The electronic board is damaged – If ignition is carried out correctly, but the unit immediately goes out, then the control board may not recognize the flame. Based on this, it is required to perform its diagnostics. Refusal to ignite. This code may occur when the ignition mechanism is not working or the burner flame is fading. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation. The electronic board is damaged – If ignition is carried out correctly, but the unit immediately goes out, then the control board may not recognize the flame. Based on this, it is required to perform its diagnostics. Refusal to ignite. This code may occur when the ignition mechanism is not working or the burner flame is fading. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board.
Insufficient draft can be the main factor in burner flame separation. The electronic board is damaged – If ignition is carried out correctly, but the unit immediately goes out, then the control board may not recognize the flame. Based on this, it is required to perform its diagnostics. Refusal to ignite. This code may occur when the ignition mechanism is not working or the burner flame is fading. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation.
It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation. It is necessary to inspect the connections between the ignition mechanism and the flame sensor, and in addition between the gas valve and the board. Insufficient draft can be the main factor in burner flame separation.
Hefest Boiler Error Code E7
Overheating of the heat exchanger of the Hephaestus boiler. The unit stops. The overheating safety thermostat is triggered – The overheating thermostat, like the temperature sensor, is most often installed on the outlet pipe of the main heat exchanger. The functional task of the thermostat is to protect the apparatus from high temperatures. A malfunction may occur due to problems with the thermostat, temperature sensor, and also if the operation of the main circulation circuit is difficult.
Temperature sensor failure – The electronic board receives an incorrect signal or the contact between the control board and the sensor is broken. Failure of the overheating thermostat – When the thermostat is operational, but the actual overheating of the liquid is determined, then most likely there is a problem with the circulation of the heating circuit coolant. Clogged main heat exchanger or main circuit filter element (lack of circulation indicates increased fluid heating). There is a problem with the circulation pump or there is an air lock in the heating system.
Hefest Boiler Error Code E1
Indicates that there is low pressure in the system. The main reasons preceding this failure: low water pressure in the heating circuit. The contact between the pressure sensor and the electronic board is broken. Malfunction of the minimum pressure switch. The first step is to find out the results of the pressure gauge reading. Very often, the failure is eliminated by means of a make-up valve, which is designed to fill the liquid into the heating circuit. When the accident reappears, it appears that there is a coolant leak. The circulation pump, main heat exchanger, emergency overpressure relief valve, worn gaskets, make-up valve and other components may be leaking. The leak is determined at the time of inspection of the hydraulic components and connections.
Hefest Boiler Error Code E6
Lack of traction. In order to ensure stable and reliable operation of the Gefest gas boiler, it is necessary to provide draft to remove combustion products so that they do not enter the room. The smoke output is monitored by electronics, and in the event of certain problems, the draft sensor will work, and the unit will stop working. The main factors in which there is a lack of draft: insufficient diameter of the chimney, incorrect design, clogging, icing of the inner wall. Reducing the diameter of the outlet channel entails a lack of thrust.
The chimney pipe is too long It is recommended to read the boiler installation manual carefully and follow all the necessary requirements. An excessively long straight section of the chimney pipe can be a source of lack of draft. Traction sensor failure – When exposed to vacuum in the supply tube, you can catch a characteristic click. There is no contact between the pneumatic relay sensor and the electronic board, the presence of condensate, as well as incorrect connection of the tubes to the pneumatic relay. Fan defective – The fan impeller is clogged. The fan shaft is not lubricated, and therefore the required speed is not generated. There is no contact between the control board and the fan.
Hefest Boiler Error Code E4
Failure to determine the temperature of the DHW sensor. This means that the DHW circuit temperature sensor is damaged or the operating temperature has increased significantly. The main factors contributing to the appearance of this problem: the hot water temperature sensor is damaged. There is no contact between the control board and the DHW temperature sensor. The control board has failed. If the DHW temperature sensor is in good condition and correctly connected to the electronic board, but the unit displays an error, then the electronic board probably needs to be replaced.
Hefest Boiler Error Code E3
The heating circuit temperature sensor is not working correctly. This indicates a malfunction of the temperature sensor in the heating circuit or the operating temperature has increased significantly. Open circuit of the temperature sensor in the heating circuit – This problem can occur when the contact between the temperature sensor and the control board is broken, or the temperature is lower than recommended. Within 5 seconds following the detection of a malfunction, the Hephaestus boiler will resume normal operation, in case the malfunction occurred by accident. You should make sure that there is no moisture on the temperature sensor connector and the controller connector.
If there is no moisture, the temperature sensor must be replaced. There is a short circuit in the temperature sensor of the heating system – This problem occurs during a short circuit of the contacts of the temperature sensor or the temperature value of the liquid is higher than recommended. The first step is to measure the resistance of the temperature sensor. If the resistance characteristics do not match the required ones, the sensor must be replaced. If replacing the temperature sensor does not work, change the electronic board.