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    Glow Worm Ultimate boiler firing up but no CH or HW

    Reply to Armo74 I've checked the red Grunfos pump and it seems fine. There is a slight vibration from the unit when running, I took the screw on the face out, and there wasn't a slot but a square head into which a screwdriver could fit and it seemed that this was conected to the spindles...
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    Glow Worm Ultimate boiler firing up but no CH or HW

    Reply to Agile He couldn't figure out was was wrong initially and after looking at the whole system he was fairly confident it was the valve. Luckily he didn't charge anything. Reply to xr4x4 I've checked all the radiator pipes and none are hot however when the backup immersion...
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    Glow Worm Ultimate boiler firing up but no CH or HW

    Hi No nothing at all. One night just noticed one night the CH wasn't working even though thermostat had been set to 20c all night. Then realised water wasn't heating either. The boiler will stay on as long as either the CH or HW is turned on at the timing switch or via thermostat Amar
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    Glow Worm Ultimate boiler firing up but no CH or HW

    Could anyone offer any advice on the following problem. I have a glow worm ultimate boiler with a landys & gyr timing control unit for both CH and HW (options for on, off, once, twice). Recently the central heating and HW stopped working. The boiler fires up fine, the flame is visible and...
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