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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 11, 2025
Profile Activity
Topics: 17 / Replies: 2129
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Reply
RE: My horrific Samsung heat pump installation and experience

We may have covered this before, if so apologies: how do you get the DS18B20 data into your monitoring system? I rather suspect the answer is going to...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

I have been looking at these, but they are not easily integrated, so far as I can see, into a (and my) USB connected modbus wired system, because the ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP decision: Should I or shouldn't I?

You must have very long evenings! Or the house was already at near design temps despite it being -10 outside, or it is a very low heat loss house with...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP decision: Should I or shouldn't I?

Not at all! The real world is much more complicated, none or two or more patients might have died (it's a small sample; maybe all the relevant risk fa...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP decision: Should I or shouldn't I?

That's going back quite some time! I used to do little sketches to achieve the same thing. This allows me to introduce another of my pet concept...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP decision: Should I or shouldn't I?

I need to formulate (maybe even model?) what are currently rather vague thoughts about terminology, but what I am getting at is the idea that in days ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP decision: Should I or shouldn't I?

This raises, at least for me, some interesting questions. I don't get the modern obsession with modelling. When I was growing up, models were somethin...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@jamespa - I agree about the need for stats on real world numbers on system failures caused by freezing, but I am not sure they exist, meaning we have...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

@jamespa - I am still stuck in an uncertainty loop about the effects of glycol on system performance. Starting at the beginning, why add glycol in the...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

But does the heat pump know it has glycol in it? Isn't output normally controlled by the weather compensation curve (water law in Samsung) - if it is ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: A Beginner's Guide to Heat Pump Monitoring Reloaded (v2)

I'm back on the case, in particular, deciding what to measure and how. The idea is to get some measurements that aren't derived from the Midea wired c...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My horrific Samsung heat pump installation and experience

The short answer, on paper, is yes, but it is not that simple. In practice, glycol is simpler, whatever happens, as long as it is there, and the temps...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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