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
Wait for the boiler to complete its automatic self-reset sequenceCheck that other gas appliances in the home are working correctlyEnsure the external condensate pipe has not frozen if the weather is coldMonitor the control panel to see if the fault clears or turns into a solid red light
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