BoilerFaultCodesWhat the manual says
Manufacturer manualFAULT: THE BURNER LIGHTS, THEN GOES OUT. The flame is spreading across the whole burner, but not being detected.
From this model's manual
Verified against the Glow Worm Ci Range installation & service manual.
What causes this fault?
This fault occurs when the boiler's control system fails to acknowledge that a flame has successfully lit, even if you can see it burning. The most common reason is a worn or dirty flame sense electrode that can no longer send an electrical signal back to the main computer to prove it is safe to keep the gas running.
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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