Emergency
Red light on Glow-worm Flexicom 56 3E

Your boiler has detected a safety issue with its burning or ventilation process and has shut itself down to prevent any risk to your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Indicates that the pilot light is not operating correctly, the combustion products discharge safety device has been activated, or the lockout device has operated.

From this model's manual
Verified against the Glow Worm Fuelsaver 56 3e 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 emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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