Boiler Fault Code 288 CF

Also written as 288CF — same fault.

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

Fault code 288 CF appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is struggling to read its own internal water levels because there is a loose wire or a faulty connection involving the sensor that checks the system pressure. (As reported on Worcester Bosch Greenstar CDi Compact)