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Could not find high limit stat - where is it? Also fan has stopped working, so now need to replace this part. Fun eh??

We unplugged the yellow leads on the PCB - basically nothing happened. Boiler did not fire up at all, red light on the PCB came on when we turned the hot tap on.

Now, back to basics. We have replaced the circuit board, the pressure relief valve, the hot water flow switch, the micro switch and now we have just changed the diaphragm flow switch. Pressure is on 1.5 bars constantly. Boiler will not fire up at all, pilot light is lit by the way.The boiler...

If that is the case, if we replace the flowswitch this will solve the problem? We changed to circuit board a month ago, so it can't be that - I hope!!!

Hiya, thanks for the paperwork, can't read the fault finding guide but thanks anyway. We will buy and change the water flow switch and let you know how we get on. What does it mean if a red light is on all the time on the circuit board? This light is on all the time, regardless of what the...

Incase you didn't read my reply to Chris, yes the light on the circuit board does stay on when boiler won't switch off. I think we need a new boiler unfortunately. Giving up hope after three weeks without heat or hot water, plus electricity costing us a fortune due to boiling kettles constantly.

Hello again, the radiators do get hot, but we can't have heat and water at the same time. When you turn on the tap for the water all is well until you turn off the tap. Then we get a terrible noise from the boiler and steam shoots out of the release valve at the top of the boiler. then the...

Thanks for the swift reply, did as requested, the boiler fired up and was fine after we plugged the connector in again. The pressure stayed at 1.5. Then I turned on the hot water tap in the sink!!! Pressure went straight up into the red - past 3 - and the flame went out on the boiler amid lots...

Please help, no heating or hot water for two weeks!! The low pressure light keeps turning on, so boiler switches off. We have changed the leaking pressure relief valve, also both the hot water flow switch and micro switch. Still no heat or water. When you raise the pressure in the boiler - ie...