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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 12, 2025
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Topics: 17 / Replies: 2130
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RE: Do setbacks save energy without compromising comfort?

The chart was in my previous post two above the last one, but the website pagination has put it on a previous page. Here it is again: ***edit:...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Do setbacks save energy without compromising comfort? The original question... Given the above chart ***edit: this is not the image I meant, see bel...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

A sorry sight for sore eyes - the last 48 hours data: Dominated by defrost cycles, appalling COPs and a slight but steady decline in IAT - hea...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Well well, here's the definitive answer as to whether Midea heat pumps run the fan during defrosts (apologies for not editing the titles etc, this is ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@kev-m - here are the data you requested, placed side by side for ease of comparison:

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

I do, I will post shortly, also for the 12kW variant, which is supposed to be the same hardware, but set to 12kW using the dip switches. Yes, thi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

I haven't seen such a plate with min/max outputs, instead I have been using the Midea Engineering Data manual which has tables of outputs for various ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Interesting to know that. I did wonder whether that might have something to do with it. It wasn't a smelly installation, but there is almost always a ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

@abernyte - ah, but you are making batty assumptions!! Note I said it was a lean to. It was an old privy about 6ft by 4ft that had been 'converted' in...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Here is my last 24 hours worth of data: Three clear defrost cycles, each with a marked uptick in OAT. There is also a clear three hour period ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Thanks for the explanation. My desired IAT is in fact 19 not 21 degrees, so the latter figures apply, and the OAT was at times close to 6 degrees, but...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Thanks for doing the modelling. It is still installed. Could you please elaborate on how why the PHE is the root cause? I don't have an absolute ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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