BoilerFaultCodes 53 High
Boiler Fault Code 53
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 53 appears across 2 boiler brands and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's electronic control board has detected an internal computer error and has shut down as a safety precaution. (As reported on Vokera Linea HE)
Pick your boiler brand for the 53 fix
Source
Information for the 53 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