So do you sometimes have difficulty getting heating or hot water? I mean, does it sometimes struggle to light?
If that flame light isn't staying solidly on, yes it's an issue with flame detection - but this seems to be quite intermittent as you say you have heating and hot water.
Flame rec problems can be down to loads of things, but before you do call an engineer make certain that the flue terminal outside isn't blocked or restricted. Apart from that there's not a lot you can do - it can be an electrical fault, it can be a physical fault with the electrode or it could even be flame lift caused by problems with fan or flue.
BunSlinger
September 2008
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