E151 High

Boiler Fault Code E151

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E151 appears across 2 boiler brands and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's computer control board has developed a fault and can no longer communicate with the system components, causing the unit to shut down for safety. (As reported on Potterton Promax)

Pick your boiler brand for the E151 fix

Baxi E151 1 model Potterton E151 5 models

Source

Information for the E151 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