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Boiler with display and pressure gauge
Boiler fault codes

Remeha boiler faults: fault codes, causes and parts (page 4 of 6)

Codes 451 to 600 of the 806 fault codes for Remeha. Looking for a specific code? Use the search on the first page.

Remeha boiler fault codes 451 to 600 of 806

The code list is split over 6 pages. Looking for a specific code? Use the search on the first page: it searches all 806 codes in one go.

CodeCause
E04.14Combustion fault
E04.14Combustion fault.
E04.15Blocked exhaust gas fault
E04.15Blocked exhaust gas fault.
E04.15The flue gas pipe is blocked
E04.17The gas valve actuator is defective
E04.17Fault in the gas valve control circuit
E04.17Fault in the gas valve control circuit.
E04.18The flow temperature is below the minimum temperature
E04.18The flow temperature is below the minimum temperature.
E04.23Internal stop communication
E04.23Internal stop communication.
E04.23Internal lockout of gas valve control
E04.24Gas type not found error
E04.24Gas type not found error.
E04.25Flame loss fault during safety time
E04.25Flame loss fault during safety time.
E04.250Gas valve fault
E04.250Gas valve fault.
E04.254Unknown error
E04.254Unknown error.
E04.26Ignition fault
E04.26Ignition error.
E04.27Fault: gas valve open at flame detection
E04.27Fault: gas valve open at flame detection.
E04.28Gas valve feedback fault
E04.28Gas valve feedback fault.
E04.29Maximum number of permitted resets reached
E04.29Maximum number of permitted resets reached.
E04.50Gas valve fault
E04.50Gas valve fault.
E04.54Unknown error
E04.54Unknown error.
E05Heat exchanger temperature too high: - Poor connection - Defective sensor - Sensor not connected or poorly connected - No flow
E05Heat exchanger temperature too high
E05Heat exchanger temperature above normal range (limit thermostat STB)
E05Heat exchanger temperature too high:
E06Return temperature sensor short-circuited:
E06Return temperature sensor short-circuited
E07Return temperature sensor open
E07Return temperature sensor open:
E07Check that the sensor is working correctly
E08Return temperature too low:
E08Return temperature too low
E08Return temperature too low
E08 E09Return temperature too low - too high
E08 E09Return temperature too low Return temperature too high
E09Return temperature too high
E09Return temperature above normal range
E09Return temperature too high:
E09Return temperature too high
E1Flow temperature is higher than the set maximum temperature.
E1Short circuit of the flow or return temperature sensor. Flow or return temperature sensor faulty or not (properly) connected.
E10Too little water. Too much air in the system. No flow.
E10No water in the boiler or pump not running
E10Too little water. Too much air in the system. No flow.
E10Too large a difference between flow and return temperature
E10Too large a difference between flow and return temperature
E10Too large a difference between flow and return temperature
E10 E11Too large a difference between flow and return temperature:
E10 E11Too large a difference between flow and return temperature
E10 E11Too large a difference between flow and return temperature:
E11Too large a difference between flow and return temperature
E11Air box temperature too high
E11Too large a difference between heat exchanger and return temperature
E11Too large a difference between flow and return temperature
E11Too large a difference between flow and return temperature
E12Heat exchanger temperature above normal range (limit thermostat STB)
E12Heat exchanger temperature above normal range (limit thermostat STB):
E12Heat exchanger temperature above normal range (limit thermostat STB):
E12MVHR unit check error
E12MVHR unit failed - Coupling remains open
E13Thermal fuse of the heat exchanger has tripped
E13Heat exchanger defective: too little water, no flow, too much air in the system.
E13Thermal fuse of the heat exchanger is defective
E13Sensor not connected or poorly connected
E13Control unit defective
E13Thermal protection has tripped
E145 failed burner starts
E145 failed burner starts
E145 failed burner starts:
E145 failed burner starts, no ignition spark
E145 failed burner starts, ignition spark present but no flame formation
E14Flame present but no or insufficient ionisation:
E145 failed burner starts, no ignition spark
E145 failed burner starts, flame present but no or insufficient ionisation (<3µA)
E14Ignition spark present but no flame formation
E15If VPS switch present: 5 failed gas leak checks
E15If VPS switch present: 5 failed gas leak checks:
E16False flame signal
E17Gas valve fault:
E17Gas valve fault
E17Gas valve fault SU PCB
E17Gas valve fault SU PCB:
E2No flow
E2Return temperature > Flow temperature
E2Sensor not connected or poorly connected, check the wiring between the sensor and the control panel
E2Too little water. No flow Too much air in the system. Deviation of the flow or return temperature sensor.
E2Sensor not connected or poorly connected
E3Control unit or earthing fault
E3Too little water. No flow. Too much air in the system. Wiring incorrectly connected. Deviation of the flow or return temperature sensor.
E3Flow temperature sensor open
E32Flow temperature sensor short-circuited
E33Flow temperature sensor open
E34Fan fault
E34Fan fault
E34Fan fault
E34Fan fault:
E35Flow and return swapped:
E35Flow and return swapped
E365x flame loss
E365x flame loss, no ionisation current
E37Communication error:
E37Communication error with the SU PCB
E37Communication error with the SU PCB
E37Communication error with the SU PCB:
E38Communication error with the SU PCB
E38Communication error with the SCU PCB (accessory)
E38Communication error with the SCU PCB:
E38Communication error with the SCU PCB
E38Communication error with the SCU PCB
E39Blocking input in lockout mode:
E39Blocking input in lockout mode
E4No flame formation after a maximum of 5 start attempts
E4Mains plug socket not properly earthed. Burner control unit faulty.
E4Mains plug socket not properly earthed - Control unit defective.
E40HRU/MVHR unit test error
E40HRU/MVHR unit test error
E40HRU/MVHR unit test error
E40If present: HRU/MVHR unit test error:
E40If present: HRU/MVHR unit test error:
E41Maximum temperature of the control unit exceeded:
E41Maximum temperature of the control unit exceeded
E43Parameter settings are not correct
E43Parameter limits
E44Parameter limits
E44Parameter settings are not correct
E45Parameter settings cannot be reset to default
E45Parameter limits
E5Ionisation or ignition error
E5Ionisation error
E5No ignition spark. Ignition spark present, but no flame. Flame present but no or insufficient ionisation (lower than 3 or higher than 9 μA).
E6Incorrect flame detection
E6CO2 setting is not correct. Gas inlet pressure too low during burning
E7No water in the boiler or pump not running
E7Ignition transformer or control unit defective
E7Ignition transformer defective, replace transformer, or control unit defective, replace control unit
E8Fan error / Fan does not run
E8Too little water. No flow. Too much air in the system.
E8Fan error: fan does not run

Remeha parts are available from Instalpunt. Back to the first page with the most searched codes and frequently asked questions.

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