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Cheers Both! I'l first off try adjusting the flow restrictor (easiest & cheapest task lol) then if not perhaps look at cleaning the port (next cheapest task) and then if Im still not winning I'll maybe replace the DHW flow switch diaphragm - no doubt if thats the case I'll be back to ask for...

I'll give the flow restrictor a try :wink: water pressure has never been great, but I havent seen a noticeable drop of late, so who knows! Cheers Mike

Thanks Kev - just had another go now, and not sure where I was getting those flow rates this morning, possibly still half asleep, but just done it again now and flow rate is about 6-7 litres per min, and the same thing is happening, hot water cycles on/off, heats up fine, cools down again and...

Thanks Kev - just had another go now, and not sure where I was getting those flow rates this morning, possibly still half asleep, but just done it again now and flow rate is about 6-7 litres per min, and the same thing is happening, hot water cycles on/off, heats up fine, cools down again and...

Hello, Im hoping someone may be able to advise.... My 'faithful' 15yr old puma 80 really struggles to provide DHW at peak times, eg getting in the shower at 7am when mains pressure is a little lower than normal due to the rest of the town also getting in the shower at 7am. I've used the...

Hi Guys, After 14 years of faithful service am thinking about replacing my Potterton Puma 80. Its still works, but is so noisy its unbelievable and also seems to have something going wrong every other week - have replaced heat exchanger, pump, fan (twice) repressurised CH expansion vessel god...

cheers superdupergasman - did think about that one, but with me being a relative amateur I was not sure whether I could safely use PTFE inside a boiler hehe! I am now going to give it a go though, if it saves me a few quid I'll be happy haha!

Cheers for that - might just follow your advice, however can I just check Im looking at around £40 for a replacement - or am I barking up the wrong tree. From what I can gather the G.C part number is 337 322 and on the interparts website the o-rings are listed seperately, so dont want to buy the...

Hi Guys, Water has been dripping from the Central Heating Temp Sensor on and off for months, however is now dripping more or less constantly. Have tightened it slightly, which made a temporary improvement, but alas its back to a constant drip. Sensor itself appears to work fine, however...

Hiya Tony, Filling loop was closed both ends - about a millilitre of residual water in there - and I thought I was gonna drown! Now - whats all this about a diaphragm? When I mentioned the pressure dropped minutely, this is only me making an assumption, maybe it hasnt dropped at all, but...

Thanks for the tip Tony, I will have a nosey when i get home, I know the filling loop is attached, but the tap to "top up the boiler is definitely closed, however the tap from the mains may be open............ I suppose next time i get a cold shower I'll have to get the measuring jug and a...

Hi Guys, Am hoping someone out there will be able to point me in the right direction! I have a potterton puma 80 combi which, to all intents and purposes in running absolutely fine and dandy (touch wood) however, I am finding that during "peak water usage" times, i.e. 7-9am when i want a...