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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Jan 7, 2026
Profile Activity
Topics: 18 / Replies: 2519
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Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

@mosibi — thanks. That's an interesting find, one I have seen before. Most of the ones I have seen have the modbus tables at the end (which this one d...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

I agree, and I think there are two things in play here. First understanding the concepts, which can be complex, though some, eg the conservation of en...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

Do you have the reference for this? I have never seen it explicitly said, most of us have learnt it the hard way. There is also my observation (consis...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

@benson — the manual implementation of a WCC adjustment is neat. Push button control! Is it incremental ie one button push increases the WCC endpoints...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Growatt SPH5000 over wired ethernet rather than wireless

True networking for this is beyond my ken but using a single wire serial modbus connection over USB is exactly what I have done. It is very easy to do...

1 week ago
Forum
Solar Photovoltaic (PV)
Reply
RE: ASHP sizing - value of Heat Transfer Coefficient

@sheriff-fatman, @jamespa — I have watched the video, at least part of it, and I don't think it is malign in any way, just someone who has made an att...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Exactly. We only need to compare conditions, to decide whether they are similar or not. I now have the python code to get a simple 24 hour plot of ...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

I have just tried a program called Visipics (olden but golden...) on nine manually grabbed 24 hour period images and using loose match criteria, it ma...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

Always my preference too, but I fear it is going to be too simple! I first considered much the same as you did, min, max, mean, standard deviation (th...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@majordennisbloodnok — thanks, useful to know, I will look into it.The pattern recognition problem, how to find days with similar OAT profiles, is mor...

2 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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