BoilerFaultCodes 53125 Medium
Boiler Fault Code 53125
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 53125 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's solar heating sensor has detected an unusually high temperature or a technical fault, causing the system to stop as a precaution. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the 53125 fix
Source
Information for the 53125 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