Emergency
11.8 on Glow-worm EnergySaver

Your boiler is detecting an issue with the gas pressure being supplied to the burner, which prevents it from heating your water or home safely.

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

BURNER SETTING PRESSURE (HOT) m bar

From this model's manual
Verified against the Glow Worm Energysaver installation & service manual, page 7.
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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Related fault codes

F.11View →F.12View →

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