BoilerFaultCodes 270 High
Boiler Fault Code 270
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 270 appears across 4 boiler brands and 17 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is noting that the temperature is rising too quickly during its normal operation, which often suggests the water isn't moving through the system fast enough. (As reported on Worcester Bosch Greenstar 30i)
Pick your boiler brand for the 270 fix
Source
Information for the 270 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 7 July 2026