Hello my hearing pump failed over the weekend and a new Grundfos Ups3 was installed to replace Geundfos UPS 15-50. Hot water and central heating were reinstated however as soon as the UFH was turned on the downstairs radiators went cold but the UFH became warm. I have turned everything off and turned on each element one by one but as soon as the UFH is turned on, only the hot water cylinder and upstairs radiator work/receive hot water. Everything worked fine before the pump failed. Any suggestions please.
Discuss UFH trouble shooting in the Water Underfloor Heating Advice area at PlumbersForums.net
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Try turning just the ufh heating on for a day constantly
Then re do the test the next day
Then re do the test the next day
Thank you I will try that and report back
Reply to UFH trouble shooting in the Water Underfloor Heating Advice area at PlumbersForums.net
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