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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Jan 11, 2026
Profile Activity
Topics: 20 / Replies: 3890
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RE: Water Hammer After Heat Pump Install

That's really helpful. Yor last sentence confirms it's not to do with the ashp as such. When your ashp was installed you were also upgraded from an...

2 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Mitsu PUHZ-SW120YHA + EHSC-VM20Uk - Performance

All understood.   Obviously its a bit house dependent but many people do find that pure weather compensation is the way to go both for comfor...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Water Hammer After Heat Pump Install

From OPs description I had the impression (quite possibly wrongly) that the water hammer is associated with the domestic hot/cold water not the heatin...

2 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Mitsu PUHZ-SW120YHA + EHSC-VM20Uk - Performance

@davidalgarve Fwiw my house is more stable with pure WC than it is with any room influence , with the exception of the extreme ends of the season wh...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Water Hammer After Heat Pump Install

I agree with@jancood and incidentally it is unlikely to be anything to do with the ashp so unlikely an ashp specialist can help any more than any othe...

2 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Help needed with Grant Aerona 3 issues

Noted. Its a pity you didnt capture the flow rate and return temp when it was in fixed FT mode, but you could capture it now or just go for the 95% c...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

OK well so far as I can see there are now only three possibilities   1. The heat pump is unable to get up to the set temperature because of a...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

Thats getting pretty convincing. Remember also to check that Night Mode isn't in operation.  

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Changing from 4-port buffer to volumizer

@andy1618 see the very sage advice from @editor above. I took would bypass the installer initially and/or check the installation manual.

2 weeks ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Help me keep the faith with my air source heat pump installation

@adamk FWIW I managed unintentionally to 'coax' mine into making more noise than usual . The noise sounds rather like what you are experiencing and a...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Help needed with Grant Aerona 3 issues

Ok please post back once experiment complete. Give it a couple of hours to be sure. Ok looks like you have an llh which makes fault diagnosis mo...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Octopus Cosy Heat Pump Owners & Discussion Thread

You are in essence right. Adia only works with selected heat pumps and I dont think cosy is one of them. Don't worry, none of this is necessary if ...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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