I have a Baxi combi system ( Bahama 100 ) and every time I turn on the hot water tap or put the heating on the boiler fires up,runs for 20/30 seconds then it goes off. Stays off for 20/30 seconds then fires up again. I was talking to a plumber who said he thinks it could be the circuit board and there £400 - £500 to replace.No thanks, I'll willing to try all options first so any feedback would be appreciated.
