Last seen: May 8, 2025
This is the point that I failed to get across to @derek-m, whether we like it or not, as far as the heat pump is concerned the OAT, is what it is wher...
But based on what? At any one point in time, the OAT is fixed, the Set LWT is fixed (by the WCC or because the heat pump is Fixed LWT mode), but what ...
@derek-m - let's not start rowing again, but what exactly does 'no problem' mean or contribute?
Unfortunately there is no way I can run with such a low LWT and have a warm house. This was known about at design time, having a small listed building...
I am still unclear how practically to do this. The OAT has been falling overnight, and is currently 4 degrees, ie approaching the defrost cycle range....
Yes, it is in one of the modbus registers, and I just collect it as I would collect any other register value. I'm guessing it is set by an algorithm t...
I thought the intention with the Met office data was to verify the accuracy or otherwise of the Midea OAT, and if it passed muster then it could be ac...
I had considered something along these lines, but came to the conclusion that it needs a free flow of air to reflect the local air temp. It has 5V goi...
Yes, the real problem is the cycling, even at OATs that should have a steady LWT. Below 5 degrees OAT it will defrost cycle, above a certain OAT it ha...
I don't think the AA script will do anything, recall it changes the ends of the WCC, which by definition won't be in use if WCC is off because Fixed L...
@derek-m - I'm going to turn off the setback as from tonight, and will try a period of fixed LWT starting tomorrow morning, and will monitor what happ...
It's the same with Midea, most of the values are integers. I have just taken a pragmatic view that that will have to be good enough, and it is certain...
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