my baxi 105HE heats water to the taps but CH wont come on.the grundfos pump is hot and not seized.i have not used CH for a while and wonder if the boiler needs restting having already tried to reset it on the main control switch.
the divertor valve is stuck thus bringing the boiler on for a short time but not allowing water to flow to the rads,its probably black sludge within the boiler that's caused it.buy a new divertor valve,it does not come with the hot water pressure differential valve, prob get 1 on ebay for less than £40
lifesagag123
October 2014
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