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Thanks Gigglepin, the diverter valve actuator only operates when CH is called, having spent a lot of time turning the HW tap on and off while running to the boiler to see what's happening, it seems that when the DHW is turned on the diaphragm pin does extend a bit but not enough to activate the...

Hi All, I've got an issue with my Ideal Mini C28, CH works absolutely fine but when I turn the HW tap on the DHW Flow switch clicks and the LED comes on but the boiler does not ignite, however if I take the diverter valve actuator off and manually push down the diverter valve (while the HW tap...