BoilerFaultCodes c80 °C Low
Boiler Fault Code c80 °C
Also written as C80C — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code c80 °C 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 is simply showing you the current temperature of the water being sent to your radiators, and you can press the reset button to see your system's water pressure instead. (As reported on Potterton Powermax HE)
Pick your boiler brand for the c80 °C fix
Source
Information for the c80 °C 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