High
Pilot does not stay alight on Glow-worm Compact (2006-2011)

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.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Thermocouple circuit fault or thermocouple not enveloped in flame.

From this model's manual
Verified against the Compact 80p installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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