BoilerFaultCodes Case temperature Emergency
Boiler Fault Code Case temperature
Also written as CASETEMPERATURE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Case temperature 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 has detected that it is becoming dangerously hot inside its outer shell and has switched itself off to prevent damage or fire risk. (As reported on Potterton Envoy 30)
Pick your boiler brand for the Case temperature fix
Source
Information for the Case temperature 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