What the manual says
Manufacturer manualTemporary flame loss. Boiler will self reset, if fault continues you will see 3 red flashes.
From this model's manual
This code was read directly from the manufacturer service manual for this model.
DIY fix possible
Check that other gas appliances (like a gas hob) are working to ensure gas supplyMonitor the boiler to see if it clears the fault and resumes operationIf the fault persists and turns to a red light, attempt a single reset via the reset button
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