High
E04 on Remeha Selecta Combi

Your boiler has tried to start five times without success, so it has safely locked itself to prevent gas buildup.

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

Five failed ignition attempts

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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