Firebird Combi Boiler Error Codes

Firebird Combi Boiler Error Codes If you have a Firebird boiler, this guide will take you through common Firebird boiler problems and how to fix them to get your hot water and heating back up and running. Listed below are the common Firebird fault codes as described by the boiler manufacturer along with a possible cause.

Firebird Boiler Error Code Solutions

Firebird Boiler Error Codes

FaultPossible Cause
E1Control thermistor fault
E2Flue thermistor fault
E3Flue thermistor fault
E5Burner fault (possibly burner lockout)
Thermostat at a high limit (cuts off)Reset boiler
ProblemPossible causeDo you need an engineer?
No heat or hot waterCan be caused by several things including broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat or low water levelsYes
Leaking and drippingMost likely to be a broken internal component but it will depend where the water is leaking fromYes
Banging, whistling or gurgling noisesAir in the system could be causing this, otherwise it could be that the water pressure is too lowYes
Pilot light goes outThe thermocouple could be broken which is in turn stopping the gas supplyYes
Losing pressureCould be a water leak in the system, the pressure relief valve needs replacing or due to recently bleeding radiatorsNo, unless there’s a leak
Frozen condensate pipeThis fault should be displayed on your boiler as an error code or warning notificationYes
Thermostat issuesThermostat could be turned off or not set to the correct settings (time etc.)Consider replacing
KettlingLimescale or sludge building up on the heat exchangerYes
Radiators not getting hotSludge or air building up in the system or an unequal distribution of heatYour radiators will need to be bled which doesn’t require an engineer but if you don’t feel like carrying out the task yourself
Boiler keeps switching itself offCould be low water pressure, a problem with the thermostat or a lack of water flow due to a closed valve, air or the pump not circulating the water in the system properlyYes

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