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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 29, 2025
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Topics: 17 / Replies: 2081
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RE: Connecting Home Assistant to a Midea Heat Pump

Not so long ago a likened the hardware and RS-485 to the Morse keypads and telegraph wires in an old telegraph system and modbus to the Morse code sen...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

@transparent - it's probably just another case of bad manual language. I thought modbus 'functions' were used to tell it what to do eg 03 means 'read ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

This is why I am now trying to be as generic as possible in what I do, the idea is to have a generic approach that can be used either as it is or with...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

This is rather too cryptic for me, how, for example, would I 'solve the "sample and hold" behaviour of the heat pump interface'? I know you are replyi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rate the quality of your heat pump design and installation

I am pretty sure this is the company I had to fire to get my heat pump installed by another installer. They were the LA grant peoples' 'preferred inst...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

@filipe - it does sound like an odd design/system. 12kW heat loss, 22 rads, that's give or take 500W on average output for each rad which even at ASHP...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

We continue to live in interesting times. Some energy in results in kWh from the last 2 hour periods: PS I see forum clock is still on GMT. Th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

@derek-m - here are the results: 60 x 10A, 240V: all simple spreadsheet calcs give correct answer, 2.4 kWH, python integration methods (np.trapz, sc...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

Ah, got it, will do and report back.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

Difficult to make that happen, I don't have direct control over the current. I do however have the external heat pump dedicated kWh meter which reads ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

Jumping in rather over my depth, I did find two ways* of calculating the integral, one via a spreadsheet formula and the other by using an online calc...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

I have been trying different ways of calculating energy in to compare the results. I have taken an hour when the heat pump was running in a fairly ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Page 113 / 175
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