E37 High

Boiler Fault Code E37

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E37 appears across 8 boiler brands and 44 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 its connection with the main control panel, meaning the system can't send or receive the signals needed to heat your home. (As reported on Remeha Avanta 18V)

Pick your boiler brand for the E37 fix

Alpha E37 20 models Ariston E37 2 models Ferroli E37 2 models Johnson Starley E37 1 model Keston E37 9 models Remeha E37 7 models Vokera E37 2 models Warmhaus E37 1 model

Source

Information for the E37 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