How much does it cost to fix boiler error code Lights Off Off Off?

Typical repair cost for the boiler Lights Off Off Off fault is £80-180 including labour.

Lights Off Off Off High

Boiler Fault Code Lights Off Off Off

Also written as LIGHTSOFFOFFOFF — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Lights Off Off Off appears across 2 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is not receiving the signal to turn on, which usually means your external heating controls like the thermostat or programmer are not calling for heat. (As reported on Baxi Solo 3)

Pick your boiler brand for the Lights Off Off Off fix

Baxi Lights Off Off Off 2 models Potterton Lights Off Off Off 3 models

Source

Information for the Lights Off Off Off 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