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

Typical repair cost for the boiler All Lamps OFF fault is £120-350 including labour.

All Lamps OFF High

Boiler Fault Code All Lamps OFF

Also written as ALLLAMPSOFF — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code All Lamps OFF 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 appears to have no electrical power at all, meaning the screen and lights are completely blank. (As reported on Biasi Garda M90f)

Pick your boiler brand for the All Lamps OFF fix

Biasi All Lamps OFF 1 model

Source

Information for the All Lamps 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