How much does it cost to fix boiler error code Orange 'Mains' light?

Typical repair cost for the boiler Orange 'Mains' light fault is £90-250 including labour.

Orange 'Mains' light Low

Boiler Fault Code Orange 'Mains' light

Also written as ORANGEMAINSLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Orange 'Mains' light 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 is receiving electrical power, but if the light is off, there may be a problem with the electricity supply or the internal circuit board. (As reported on Glow-worm Swift Flow 100)

Pick your boiler brand for the Orange 'Mains' light fix

Glow-worm Orange 'Mains' light 1 model

Source

Information for the Orange 'Mains' light 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