B
buckley plumb
this boiler is begining to get the better of me .Every so often the boiler gives only luke warm water for a day then goes ok.checked voltages to gas valve and they are in tolerance and burner pressure is not bad should be 15 getting 14mb.i thought hw thermistor but now having my doubts,even thought plate to plate at first but it would work for wks then go faulty and then work again.checked for heat going down central heating flow and seemd ok .been back to it tonight and was getting the burner pressure but luke warm water -the central heating pipe was warm but not hot so now suspect diverter passing -so took motor off which was working fine and pressed plunger in on diverter which seemed to improve the hw temp -put back together and it worked then did the same again 2 hrs later luke warm water.thinking of changing diverter this wk to see -i just dont want to throw parts at it unless it needs them
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