High
NEON6 on Glow-worm Micron 50FF

Your boiler is failing to light or stay lit, meaning it cannot heat your home or water.

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

FLAME FAILURE

From this model's manual
Verified against the Glow Worm Micron 50ff 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.

What causes this fault?

This fault occurs when the boiler attempts to start up but cannot detect a stable flame after several attempts. The most common reasons are a worn ignition electrode that can no longer spark correctly, or a faulty gas valve that isn't allowing fuel into the burner.

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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Related fault codes

NEON 1View →NEON 3View →

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