Hi fellas just wondered if any of you clever chaps have a clue what is going on with my combi boiler? Worked fine for about a year or so (we moved in november last year) but for the last few days whenever i turn the heating on the temperature rockets to over 100 . The rads are cold as the pump doesnt start running. Just heats up the water in the boiler itself. Had the front of the pump off and its not seized i.e its moving freely when turned with a screwdriver. Hot water works fine and the heat exchanger is clean. Rads are all vented and pressure in the boiler is ok so im thinking maybe a sensor or something? Possibly pcb? Any advice is greatly appreciated and i hope ive given enough info here.
Also i should note that the boiler displays no error codes just powers down when gets too hot
Thanks again
Hheng
Also i should note that the boiler displays no error codes just powers down when gets too hot
Thanks again
Hheng