Emergency
ALL 82 on Sime Murelle Revolution 30

Your boiler has detected multiple failed attempts to light the flame or maintain stable burning, so it has locked itself for safety to prevent gas buildup.

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

Block due to numerous combustion control failures

From this model's manual
Verified against the Sime Murelle Revolution 30 installation & service manual, page 63.
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

AL 01View →AL 02View →AL 03View →

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