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check their web site danfoss-randall.co.uk it helped me out with my motorized valve problem. I contacted their technical section they were really helpful

please forgive my prolixity then cheers

Thanks for the adviceNigef We are getting there now No I did n't open the valve manually when I drained the system or when I filled it. is that a problem? Followed your advice ,opened up the bleed valves on the rads upstairs should I have opened the downstairs ones I didn;t as I thought as they...

thanks for your help nige the valve is to replace a faulty one. my system is pumped C.H. and gravity fed domestic hot water after this hassle I am going to change to an indirect cylinder is this just a straight replacement with the addition of an extra storage cistern in the loft or will the...

thanks it is a gas boiler not coal. should i drain the central heating as well

can anyone tell me how to refill a primatic cylinder so as to keep this air bubble? I have tried to fill it but the domestic hot water goes up to the cylinder but i can't get any hot water at the taps. Cold shaves are murder for my complexion. can anyone help please

don't look for signals watch their front wheels and watch for the peel off point just like the peel coming off an orange

Can anyone help? I have just fitted a new danfoss motorized valve to my system and after filling can't get any hot water or heating. There is very hot water going to the centre of the hot water tank, which is a primatic cylinder the new valve is opening ok getting desperate