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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Jan 10, 2026
Profile Activity
Topics: 20 / Replies: 3877
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RE: Heat pump not reaching flow temperature

@davec Ive had a look at the screenshots. Lots of the parameters are things you wouldn't want to touch but: Im guessing H43 and H44 are the two F...

2 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant aroTherm not heating with many faults

When I had a series of apparently unrelated faults my installer turned up, checked the flow rate using the test menu, and cleaned the filters (two - a...

3 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump not reaching flow temperature

At this stage I would say no as gross underestimation of the loss is not the most likely cause of the problem. More likely causes are (a) the heat...

3 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

I cant see how that is the case if the earth is provided by means of a bond to the metal outer sheath of the incomer; no cut (other than one in your d...

3 hours ago
Forum
Energy Storage
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

Thanks for the clarification.  

5 hours ago
Forum
Energy Storage
Reply
RE: Considering MLCP (Multi-Layer Composite Pipe) for ASHP

OK, TBH I dont know enough about MLCP to comment with any authority. The simple message so far as I am aware is: Nothing inherently wrong with plasti...

6 hours ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Heat pump not reaching flow temperature

Peak Energy Products most recent accounts (to June 2024) make interesting reading. Im not an expert by any means, but their assets are almost entirel...

6 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Considering MLCP (Multi-Layer Composite Pipe) for ASHP

To answer this properly you need a heat loss calculation. Then you can work out how much flow each radiator needs which will tell you what diameter p...

8 hours ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Heat pump not reaching flow temperature

Definitely please!   Is that a plate heat exchanger above the bucket. Can you tell whether it is connected to the DHW or to the space hea...

8 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump not reaching flow temperature

Firstly welcome to the forum. From the preceding posts on this thread you may have gathered that this unit appears not to 'expose' the key parameter...

10 hours ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Recommended home battery inverters + regulatory matters - help requested

On reflection your description (which I understood) made more sense than the diagram (which I don't). The diagram seems to have two contacts/switc...

10 hours ago
Forum
Energy Storage
Reply
RE: Heat pump not reaching flow temperature

Thanks, equally useless uinfortunately It appears that the controls for this heat pump are different to almost all others on the market and, from wh...

13 hours ago
Forum
Air Source Heat Pumps (ASHPs)
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