How much does it cost to fix boiler error code Pilot does not stay alight?

Typical repair cost for the boiler Pilot does not stay alight fault is £120-200 including labour.

Pilot does not stay alight High

Boiler Fault Code Pilot does not stay alight

Also written as PILOTDOESNOTSTAYALIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Pilot does not stay alight 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's pilot light is failing to stay on because the internal sensor that detects the flame is either blocked, misaligned, or faulty, causing the boiler to shut off for safety. (As reported on Glow-worm Compact (2006-2011))

Pick your boiler brand for the Pilot does not stay alight fix

Glow-worm Pilot does not stay alight 2 models

Source

Information for the Pilot does not stay alight 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 7 July 2026