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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 14, 2025
Profile Activity
Topics: 17 / Replies: 2075
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RE: Totally bewildered with my ECO4 heat pump installation

Being a recipient of 'charity' does odd things to our heads. As others have said, your installation wasn't free, it was just free to you, and someone ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

@judith - thank you very much. I take it the dips you can see in the mainly green chart you posted on the right above are defrosts, on the assumption ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

@judith - thanks. Can you get leaving and returning water temperature at one minute intervals? That would let us see frequency and duration of defrost...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ASHP for small garage and workshop

Yes, I do. I also have glycol in the primary circuit, and use a specific heat capacity of 4.05 for that (I noticed you use 4.2 ie pure water). The sec...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP for small garage and workshop

No! I mentioned this in the post that has the download ("ignore them, along with some of the never change columns eg room_temp which is Midea's idea o...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

Of course, that should be a key thing, warmer air can hold more water than cooler air. But in practice my heat pump seems to do much the same defrost ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

That is indeed what they are, though Midea calls readings from it the Outdoor ambient temperature. As ambient is in practice rather vague (does it mea...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump starting current

Of the charts that I posted on 17/01/2025 at 8:46 am, the first two are normal cycling, the second two are defrost cycles. The way I identify defrost ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP for small garage and workshop

OK here the data for 0600-0659 in the chart I posted earlier today at 10:13 (actually its 0559-0658 because each row is the trailing minute, but what...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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