How much does it cost to fix boiler error code ER 08 + SPANNER?

Typical repair cost for the boiler ER 08 + SPANNER fault is £90-180 including labour.

ER 08 + SPANNER Low

Boiler Fault Code ER 08 + SPANNER

Also written as ER08SPANNER — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code ER 08 + 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's outdoor weather sensor is reporting an incorrect temperature, which may cause your heating to respond inefficiently to the weather outside. (As reported on Johnson Starley Warmcair DW)

Pick your boiler brand for the ER 08 + SPANNER fix

Johnson Starley ER 08 + SPANNER 1 model

Source

Information for the ER 08 + 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