Emergency
200 mm on Malvern TenTwenty

Your boiler's flue terminal is positioned too close to the roof overhang, which is preventing exhaust gases from safely dispersing and potentially causing them to be pulled back into the property.

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

Below eaves

From this model's manual
Verified against the Malvern Tentwenty installation & service manual, page 5.
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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