Baxi error codes
Common Baxi combi boiler fault codes and what they mean.
- E109 Pre-circulation fault
- E110 Overheat — safety thermostat tripped
- E117 Water pressure too high
- E118 Water pressure too low (below 0.5 bar)
- E119 Low water pressure
- E125 Primary circulation fault
- E128 Flame failure — the flame has failed repeatedly
- E130 Flue thermostat tripped
- E133 Failed to light — gas supply interrupted or flame failure
- E134 Gas valve open with no gas detected
- E135 Internal gas supply interruption
- E160 Fan or fan wiring fault
- E20 Central heating temperature sensor (NTC) fault
- E28 Flue sensor fault, or blocked flue/condensate pipe
- E321 Hot water temperature sensor (NTC) fault
- E384 False flame detected
- E40 Central heating return sensor fault
- E50 Hot water temperature sensor (NTC) fault