Last seen: Nov 18, 2025
Part 2: Detailed Hardware Specification One of the problems that I had was that I was not familiar with the types of hardware I needed. I would know...
As long as we trust it as a valid reading, the modbus LWT is the LWT, ditto for the RWT and flow rate (all on the primary circuit side, as measured by...
Zooming in is again perhaps helpful. This is midnight to 2am last night, and although there is cycling, the average LWT does seem to be about 33 degre...
Yes, I have a PHE, but no buffer, standard Freedom Heat Pump setup. As we have since discovered, they don't know whether a PHE is a 'warranty requirem...
@derek-m - thanks, I have downloaded it and will see how I get on. I'm also going to tweak the WC curve a bit, probably start by lowering the right ha...
And the formulas - still trying to get my head round them, and I am no stranger to spreadsheets. It looks like you imported the data from the Midea...
OK, I think I get it (col D is confusing, because the header only has COP/LWT), but the numbers still don't reflect reality eg (from the zoomed in cha...
I've just zoomed in on the frequent cycling (from 0000 to 0200 this morning), and close up, it doesn't look too bad: It's 'only' cycling twice...
The corresponding energy out figures summed from the csv data files are 257 kWh for the Midea app, 264 kWh for my calculated figure, giving average to...
Duh, I can be so dumb sometimes! I've just remembered I've got an independent way of checking energy in: the external heat pump dedicated kWh meter. T...
@derek-m - I don't think the model and the real world agree, but there is one thing I am not sure about in the spreadsheet, what to enter for the Tota...
Here it is, the mother of all heating charts: No need to comment that it is far too busy, I know it is, but it is all the data on one chart. C...
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