Boiler Fault Code Condensate Pump (Green Light)

Also written as CONDENSATEPUMPGREENLIGHT — same fault.

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

Fault code Condensate Pump (Green Light) 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 currently pumping away waste water, which is a normal part of its operation and doesn't necessarily mean there is a fault. (As reported on Potterton Promax FSB 30HE)