ER 69 High

Boiler Fault Code ER 69

Also written as ER69 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code ER 69 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 is failing to detect the water pressure inside the system because the sensor is disconnected or faulty, which is preventing it from safely heating your home. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the ER 69 fix

Biasi ER 69 5 models Johnson Starley ER 69 1 model

Source

Information for the ER 69 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