How much does it cost to fix boiler error code All lights OFF?

Typical repair cost for the boiler All lights OFF fault is £100-250 including labour.

All lights OFF High

Boiler Fault Code All lights OFF

Also written as ALLLIGHTSOFF — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code All lights OFF appears across 1 boiler brand 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 has lost all power and is completely unresponsive, meaning it cannot provide heating or hot water until the electrical connection is restored. (As reported on Potterton Puma 80/100)

Pick your boiler brand for the All lights OFF fix

Potterton All lights OFF 5 models

Source

Information for the All lights 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