Last seen: Sep 17, 2025
As others have said, you are very welcome here. Thanks for posting. As @jamespa has said, more info about your setup will help us to get to the bottom...
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 ...
@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 ...
@judith - thanks. Can you get leaving and returning water temperature at one minute intervals? That would let us see frequency and duration of defrost...
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...
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...
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 ...
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...
Latest Posts
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RE: Powerwall 3 or Myenergi or something else?
Many of those tariffs are simple time of use tariffs, w...
By Temperature_Gradient , 2 hours ago
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RE: Help me keep the faith with my air source heat pump installation
Yes thats the whole point of the flexis as regards tran...
By JamesPa , 3 hours ago
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So far as I can tell designing for DT5, which is 'the n...
By JamesPa , 3 hours ago
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Mitsu PAR-WT60R Wireless Controller - options
I hope I have satisfactorily installed the above wirele...
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WC curve best discovered by experiment anyway as any lo...
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RE: Big Changes Coming to Our Heat Pump System
@editor your engineer's attitude is truly horrifying. ...
By GrahamF , 1 day ago
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RE: How to choose Towel Rails for an ASHP
@rob-nezard yes absolutely. Here is the link and a pho...
By GrahamF , 1 day ago
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@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 1 day ago
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RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 1 day ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 2 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP
I've never physically seen it, but I seem to recall som...
By cathodeRay , 2 days ago
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RE: Midea ASHP – how to set weather compensation
I noticed that too and thought the same thing, but then...
By cathodeRay , 2 days ago
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RE: Ya can’t win! It is S*d’s Law!
@old_scientist If IOF is still running next late spring...
By Toodles , 2 days ago
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RE: Electricity price predictions
Those of you on Agile will do well tomorrow; there are ...
By Toodles , 2 days ago
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RE: Who’s Caved and Switched the Heating On Already?
We've been running our Ecodan system, installed in June...
By Sheriff Fatman , 2 days ago
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Ok. Two schools of thought. The first is to run the ...
By JamesPa , 3 days ago
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@drei Willing as I am to help, I don't think I'm yet ...
By JamesPa , 3 days ago
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Selling 5 year old ASHP & Gas Combi Boiler - £590
Selling a 5-year-old Daikin Altherma Hybrid Air Source ...
By Paul G , 3 days ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Much of that is true in principle, but its not likely t...
By JamesPa , 5 days ago
