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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Oct 14, 2026
Profile Activity
Topics: 18 / Replies: 3071
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RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

Ah, got it, thanks. I have a mono rather than a split, but it looks like I have the same PCB with a USB port in the same place.

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

Like you, I don't know, but my guess is you are right. Midea use modbus to communicate between the outdoor heat pump and the wired controller. There i...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

@schnetf — here are some photos from my 'How to' thread showing a bit more detail:    

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

@schnetf — have a closer look at the arrowed connections, I think they are the modbus connection terminals (the photo is a bit blurred):  

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

You are 90% of the way there. You can use the midea_ac_lan integration which 'snoops' on the app's wifi data, but it is a bit flaky and only gives acc...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

I wrote an almost complete guide on how to do this here. The only thing missing is the final instalment with the python scripts, which is now part wri...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Our ASHP design and installation journey

This is always a tricky one. Someone has to pay for the work and time. Personally I prefer the approach that the cost is absorbed into the overall cos...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Our ASHP design and installation journey

Some orange if not red flags for me here. (1) a 'ceiling' cost sounds attractive but they give one without doing a full survey. Does that really ma...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP Issues with Smart Home App losing connectivity with the Wall Unit

I think it is one of those urban myths, 'cycling = bad', and as you say it is often not as people think, some heat pumps including Midea units use slo...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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