High
43 on Alpha Intec2 30SE

Your boiler is struggling to keep its internal flame lit while it is running, likely because it is having trouble breathing due to strong winds or a blockage in its external exhaust pipe.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Loss of flame rectification. Repeated loss of flame signal during operation. This fault can occur if the flue is exposed to high wind conditions (shown as E38 in the fault code history in the INFO menu)

From this model's manual
Verified against the Alpha Intec2 25 28xe 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 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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