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cathodeRay
cathodeRay
@cathoderay
Moderator
Illustrious Member
Joined: Feb 28, 2022
Last seen: Sep 19, 2025
Topics: 17 / Replies: 2159
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RE: External stat issue

That's probably the most important point, maybe see if you can get a replacement fitted?

4 days ago
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RE: External stat issue

@cliffhanger - OK, that's clear. My earlier remark about if it is consistently inaccurate still applies. The weather compensation curve will in effect...

4 days ago
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RE: External stat issue

If it is measuring (and only measuring) the OAT, it is a sensor, if it measures the OAT and then does something like turn the heating on or off, then ...

4 days ago
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RE: External stat issue

Do you mean sensor rather than stat? If so, and we are talking about the OAT (outside air temperature) as reported by a heat pump, then this something...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

I've never physically seen it, but I seem to recall something somewhere that suggests it is, as in Samsung units, somewhere near the fan intake. ...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

That has always been my most likely explanation, in which case the Midea recorded OAT when the heat pump is running is a bit lower than the actual OAT...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

Homely has been discussed a fair amount on the forum, and it seems to a bit of a Marmite product. The developers also have some rather odd business pr...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

Here's a four hour period from the same morning last November. Why does the set LWT change when it does? The OAT is lower when the heat pump is active...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

I agree. The OAT is fundamental, it is both a major determinant of heat loss and, with weather compensation, the major determinant of what the heat pu...

4 days ago
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RE: Testing new controls/monitoring for Midea Clone ASHP

@jamespa - I think the key thing is the current (as in the chart above) Midea data is the average over the previous hour, and so we lose sight of the ...

5 days ago
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RE: Midea ASHP – how to set weather compensation

I noticed that too and thought the same thing, but then thought the DHW is only a small part of the overall energy use. The note alongside it suggests...

5 days ago
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