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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 10, 2025
Profile Activity
Topics: 18 / Replies: 3326
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RE: Share Your Experiences with Heat Pump Manufacturer Support

OK that now makes sense, basically both control loops are operating as expected. If you changed the target deltaT to 5 I presume that the heat pu...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: What is this... white plastic ring?

@powysperson You don't say what your heating us. If by any chance you have a heat pump don't fit radbots. In most cases don't fit trv tops either...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: advice on excessive shortcycling and overall efficiency

I agree with the above Fancoiks have a very small water volume and you have a fairly high capacity heat pump in a mild climate. Short cycling is to ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Share Your Experiences with Heat Pump Manufacturer Support

Sorry I'm still not sure what you are actually observing (what do you see as opposed to what do you think might be the explanation) The heat pump ca...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Boston Lincs based homeowner seeks advice on HP install

Difficult to comment. Given the choice I would design for 45 or less and wouldn't accept anyone who won't. I would reject without question anyone wa...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: buffer/volumizer cupboard space eater, do i need one?

I agree with @toodles. By way of a direct answer to your question, so you have a good reason to reject them and look elsewhere. I adopted the appro...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump's integral circulator pump

It provides extra system volume which is useful for defrost but may well not be necessary. Have you any idea what volume of water you have in your se...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan consuming 100kwh per day in new build!!!

@anca1808 Just to give you some comfort and set expectations, my Vaillant heat pump is working out 13% cheaper than gas on a like for like basis, over...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Share Your Experiences with Heat Pump Manufacturer Support

Maintain the LWT by adjusting its heat output (if the required power is within its modulation capabilities) This is surely OK. Its adjusting...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Share Your Experiences with Heat Pump Manufacturer Support

Im sorry but I think you are getting confused. The statement above is either not correct or there is something wrong with your system that needs to b...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

I cant remember what your WC curve showed, but it should follow that. This is only a few degrees change given that OAT doesnt vary that much Wit...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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