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The boiler has stopped working again after 3days of reseting the lock-out button. The fan wont start anymore. Can this still be a PCB fault?

The boiler has stopped working again after 3days of reseting the lock-out button. The fan wont start anymore. Can this still be a PCB fault?

Thanks for your reply. I checked the two black test points have the plugs in place and all other connections looked fine. I reset the lock-out button even thou the indicator wasnt flashing red and that did the trick. It works now but not perfectly, in the sense that I have to turn the heating...

Hi, please can you help. My Biasi combi-boiler M90e.24s has stopped working. There is no ignition spark when starting. When the hot water or heating is turned on, I can hear the water pumping up and fan starts but fans stops rolling after 30sec which means the ignition valve doesnt light up. The...