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cathodeRay
cathodeRay
@cathoderay
Moderator
Famed Member
Joined: Feb 28, 2022
Last seen: Sep 6, 2026
Topics: 18 / Replies: 3002
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RE: Midea 16kW R290 ASHP with plans for battery, PV and monitoring

Midea heat pumps have a modbus connection in the wired controller, see your wired controller manual for details. If you are familiar with Arduino/Rasp...

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

@starkers - not a problem. If I am not teaching grandmothers to suck eggs - if you are using a standard desktop browser, look for Developer mode and t...

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

That is good news. If you can find the script/code that does the plot, it will have a line in it that grabs the data, and that will tell you where it ...

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

I think one perhaps important consideration here is precisely this - what exactly does Homely do, and as part of that, how does it monitor and report ...

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

@starkers - even more interesting! If we zoom in on the relevant bit where the red line is the flow rate (L/min), the magenta line is the LWT...

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

I think choosing to run at 17 degrees and using supplementary heating on very cold days may make all the difference. In cold weather mine manages to g...

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

At some point I suspect @transparent may appear and say we are travelling off piste. If necessary, we could move the Midea heat pump performance posts...

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

@starkers - thanks, very interesting. it looks like you have the same step pattern, though it is somewhat obscured by the long interval on the x axis....

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

@starkers - also very interesting, sounds like another Freedom based installation (PHE etc, only my PHE is next to the cylinder at floor level, not on...

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

@el_presidente - hmm, interesting! Thanks. Mostly in the 1.3 to 1.5 range is not that far from where mine runs (mostly 1.43m^3/h). My chart is based o...

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

We cross posted! This chart of yours appears to show (in the blue flow line which I take it is LWT) cycling as mine does with what look like setba...

2 years ago
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