thanks for everybody’s help rang seargent who make panel above door and told me of manual way of opening valve a little turn button on top of valve so that will get me away for now and it’s booked in for fixing. thanks again
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will have a look at valve tonight. not got a tester or how i would use it. hoping there would be a mechanical override still under warranty but booking in is weeks away was going to scotland in 2weeks xxcxffcx