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Recent content by CVP

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    Confusing series of issues - Knackered pump the root cause?

    Thanks all. Pump was knackered. Nice and toasty again. Took the opportunity to whack in some descaler and will drain the system down this wekend and add the inhibitor. Chris
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    Confusing series of issues - Knackered pump the root cause?

    Thanks kevplumb. Stupid Q - if it's locked does that mean complete replacement is the easiest thing or could a big air lock lock it? Re the motorised valve. When I've been looking at this over the last few days and turning the HW and CH on and then off individually it does move, so to a...
  3. C

    Confusing series of issues - Knackered pump the root cause?

    All The symptoms are as follows; 1. Really loud intermittent banging from the boiler (Potterton, but not sure of the exact model). Just after the banging it sounds like there's a rush of air up the hot pipe coming from the boiler, almost as if the boiler is boiling the water in it and it's...
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