High
E.04 – .10 on Baxi 400 Combi (range)

Your boiler is trying to start up but cannot light the gas flame needed to heat your water and radiators.

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.

Technical description

Failure to light (could be gas supply issue).

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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