I have just bought four HR92 units, and fitted them (i think well) with the adapters fully clicking down the valve head. The units were fitted with a full anti clockwise set of the black drive wheel before mounting the head, and they cycle with no errors.
But when set to off on all four radiators they fail to shut off the supply. I think they restrict it, the radiators SEEM a little less hot, but definitely still being heated.
I have checked valve pin travel and they seem to move some 5-7 mm. Is this normal? I have tried the hammer approach and this has not helped, so am a bit stuck,. I know that the valves are not that expensive, but don't want to replacement them if there are any other suggestions?
Thanks in advance.
...Jon.
But when set to off on all four radiators they fail to shut off the supply. I think they restrict it, the radiators SEEM a little less hot, but definitely still being heated.
I have checked valve pin travel and they seem to move some 5-7 mm. Is this normal? I have tried the hammer approach and this has not helped, so am a bit stuck,. I know that the valves are not that expensive, but don't want to replacement them if there are any other suggestions?
Thanks in advance.
...Jon.
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