How can I fixed my boiler the problem I had Baxi 80e combo boiler. Seems to be all parts and all switch are working well the problem is when I turn on boiler does work 10sec after that shut down holly house power we checked all power every thing ok we checked pcb bord I would find any mark looks ok I'm not sure may pcb bord may be flame failer device is shutting down please advice me thanks

Krish, February 2017

Get someone COMPETENT - Preferably a Gas Safe certified engineer - to look at it.

It is your choice, but just blindly fiddling, with no knowledge or understanding, is a good way to getting someone killed.

You want to take that risk?

XXX, February 2017

If the water is being heated and it is not being pumped away from the heat exchanger there's a serious risk of an explosion - so an overheat cutout will operate after a short period.

It may be that the circulating pump on your installation is defective - I just guess.

Call in a specialist engineer who will soon sort it out.

I do not understand your expression - Holly House Power
If you mean the earth leakage breaker cuts off the electricity then that's another thing altogether and I have no explanation...

Good Luck..., February 2017