BoilerFaultCodes 388 Medium
Boiler Fault Code 388
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 388 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 is struggling to detect the temperature of your hot water, so it has stopped providing it to prevent overheating. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 388 fix
Source
Information for the 388 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