BoilerFaultCodes 1027 Low
Boiler Fault Code 1027
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 1027 appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has lost the connection to a sensor responsible for monitoring the temperature of your hot water supply, which may affect its ability to keep hot water ready for instant use. (As reported on Worcester Bosch Greenstar 8000 Style)
Pick your boiler brand for the 1027 fix
Source
Information for the 1027 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