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    Potterton Puma80 DHW problem

    Fortunately we had the whole valve changed! If we turn the taps down to a dribble we can maintain hot water. Thanks for all replies and suggestions. We think the boiler has gone beyond economical repair, it's 8 years old and we just don't trust it to remain reliable. Any suggestions for...
  2. S

    Potterton Puma80 DHW problem

    The dial is 1 cu ft. On the plus side, at least the gas bill won't be very high. :?
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    Potterton Puma80 DHW problem

    And here was I looking forward to a nice quiet Sunday watching the bike racing with a few beers... no seriously, cheers for all your help. Here we go: Timing is correct. Tested again with bath hot tap on full and 1min 18s to do one full turn of dial. Should I have all taps on? Or does...
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    Potterton Puma80 DHW problem

    Ok. Not sure what you need to know for the other questions... Ran hot water tap on full and timed the gas flow. It took 1min 18s for 1 cu ft and we've got a bucket with 11 litres of lukewarm water! Judgement time....
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    Potterton Puma80 DHW problem

    Cheers for your suggestions. Bripl - gas pressure appears fine as boiler happily heats the whole house nicely, but I'm not an expert so how would I check this? ChrisR - I'm in a hard water area. I added a load of Fernox products to the CH a couple of months ago but how would I descale the...
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    Potterton Puma80 DHW problem

    Our Puma80 boiler developed a DHW problem last week. It heats water up but then only maintains a lukewarm flow, which is not a lot of fun in the shower! So far, changed the DHW temp sensor, DHW limit thermostat and recently had a plumber out who changed the diverter valve. Nothing has worked...
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