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  1. V

    Potterton Puma 80 really low hot water pressure, ext. pump?

    there's a thermostatic valve on the dhw outlet wich shuts down if the temp. is too cold , sounds like its stuck
  2. V

    Combi no central heating flow

    check the right hand c.heating pipe it prob. gets hot. div. valve stuck std problem. fully pumped system no pump no hot water either.
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