ER 04 + SPANNER High

Boiler Fault Code ER 04 + SPANNER

Also written as ER04SPANNER — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code ER 04 + SPANNER appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because the water inside it is not moving around properly to heat your home. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the ER 04 + SPANNER fix

Johnson Starley ER 04 + SPANNER 1 model

Source

Information for the ER 04 + SPANNER 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