How much does it cost to fix boiler error code Does main burner light? (NO)?

Typical repair cost for the boiler Does main burner light? (NO) fault is £180-350 including labour.

Does main burner light? (NO) High

Boiler Fault Code Does main burner light? (NO)

Also written as DOESMAINBURNERLIGHTNO — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Does main burner light? (NO) appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is failing to ignite because it is not receiving the necessary electrical signal to release the gas required for the flame. (As reported on Saunier Duval Xeon 30ff)

Pick your boiler brand for the Does main burner light? (NO) fix

Saunier Duval Does main burner light? (NO) 2 models

Source

Information for the Does main burner light? (NO) 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