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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 7, 2025
Topics: 17 / Replies: 2117
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RE: Totally bewildered with my ECO4 heat pump installation

About 70kWh in the last 24 hours, OAT hovering between 2 and 4 degrees. Ouch...! To put things in perspective, I have plotted weekly and full monthl...

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

I have asked this before, borrowing from Hopalong as he is known hereabouts, what are the five most terrifying words in the English language? Leave it...

8 months ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?

@mosibi - I rather suspect the different style of plotting may be masking the fact that your plot does in fact show a similar, but perhaps marginally ...

8 months ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?

I posted this a few days ago on another thread, and shows the different set vs actual flow temp (LWT) behaviour depending on the OAT. The plots are do...

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

@jaynieq - good to hear that you were able to understand my rather long winded explanations and have started to act on them. Your installer sounds f...

8 months ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?

@benson - very useful and interesting. What I think you are seeing is the Midea tendency to cycle all the time. I would be interesting to add the Flow...

8 months ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?

I think I am right in saying you have a Midea clone, possibly a Clivet? If so it might be useful if you can post a chart of your heat pump's behaviour...

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

@jamespa - thanks. Clearly your knowledge of Vaillant heat pumps is a major advantage here. I am sure @jaynieq will answer your questions before too l...

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

@jamespa - is this something you might be able to help with?

8 months ago
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RE: Totally bewildered with my ECO4 heat pump installation

Just seen this when I posted my reply above. See above - ask your installer to set it up (or we may be able to get a Vaillant owner on the forum to gu...

8 months ago
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