BoilerFaultCodes 288 High
Boiler Fault Code 288
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 288 appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's internal computer has lost contact with the sensor that measures how much water is inside the system, so it has shut down to prevent damage. (As reported on Worcester Bosch Greenstar CDi Compact)
Pick your boiler brand for the 288 fix
Source
Information for the 288 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 31 August 2026