Select a fault code
Safety thermostat has tripped due to overheating. Circulation problem or heat exchanger blockage are common causes.
System pressure has dropped too low for safe operation.
The pump has failed or is not operating correctly.
The air pressure switch has not confirmed fan operation.
The boiler failed to light after maximum ignition attempts.
The fan is not operating correctly. Combustion gases cannot be safely expelled.
Insufficient gas pressure detected.
A safety device has operated due to overheating.
Temperature sensor has failed or is reading incorrectly.
Flame detected when burner should be off.
Flame went out during operation.
Gas valve fault detected.
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