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cathodeRay
cathodeRay
@cathoderay
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Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 4, 2025
Topics: 17 / Replies: 2105
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RE: Real world connection to a heat pump over modbus

Part 4: Software Installation - OS (operating system) and Home Assistant Disclaimer(and this is entirely my fault): because I did my own install...

8 months ago
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RE: Outcome for 2024 - with Agile, ASHP, PV, Batteries, EV

Great, and good luck! Do take your time, the old think three times, measure twice and cut once routines. If you have any questions, don't hesitate to ...

8 months ago
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RE: Outcome for 2024 - with Agile, ASHP, PV, Batteries, EV

As I'm on the case... It looks like these are the LG modbus wire connection terminals, from this HA thread:

8 months ago
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RE: Outcome for 2024 - with Agile, ASHP, PV, Batteries, EV

I think you are in luck. I found this in a LG Therma V manual: Register 30003 looks like the RWT (returning water temp), 30004 the LWT (leavin...

8 months ago
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RE: Outcome for 2024 - with Agile, ASHP, PV, Batteries, EV

That suggests a possible modbus connection. If you have or can get a service manual for your particular heat pump model, you might be able to find out...

8 months ago
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RE: Double heat pump for DHW?

There is another option. Have a bath once a month (whether you need it or not).

8 months ago
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RE: Outcome for 2024 - with Agile, ASHP, PV, Batteries, EV

This appears to be another example of heat loss calculations over-estimating heat loss significantly, something that old buildings appear to be prone ...

8 months ago
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RE: Best control strategies for heat pumps that are way oversized

If I have read and copied the Midea data tables correctly, I am not sure I can see much 'efficiency' difference between a smaller heat pump running fl...

8 months ago
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RE: Best control strategies for heat pumps that are way oversized

Midea and I suspect other manufacturers do have detailed tables of heat pump outputs and i suspect it should in theory at least be possible to compare...

8 months ago
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RE: Best control strategies for heat pumps that are way oversized

I am not sure we fully understand either the supposedly harmful or indeed the potentially beneficial effects of cycling, eg when a heat pump uses it t...

8 months ago
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