E22 High

Boiler Fault Code E22

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E22 appears across 10 boiler brands and 41 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is detecting an issue with the quality or frequency of the electricity coming from your mains supply, causing the system to shut down for safety. (As reported on Potterton Powermax HE)

Pick your boiler brand for the E22 fix

Alpha E22 4 models Ariston E22 5 models Biasi E22 9 models Heatline E22 4 models Ideal E22 6 models Johnson Starley E22 1 model Main E22 1 model Potterton E22 1 model Ravenheat E22 9 models Vokera E22 1 model

Source

Information for the E22 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026