your diverter valve is not working , not switching from hot water to heating u need a replacement wax cartridge or new diverter valve
the fitter
October 2005
Could be your pump has jammed or needs replacing. There should be a nut on the front of the pump that can be fiddled around with and may release a recalcitrant impeller. If not- new pump.
brendan
October 2005
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