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Last seen: Sep 10, 2026
@batalto - OK, thanks, now done. I did turn the DHW off and room stat down. A fair amount of crud, but that is after almost two months of near continu...
@batalto - thanks, I will check the filter and report back. Before I check it, presumably you need to turn the heating and DHW off before doing it?
@batalto - it would be interesting to compare flow rates, given we have similar units. I haven't cleaned the gauze filter, the one adjacent to the hea...
Some measurements from 0800 this morning: Midea controller: ambient 11 LWT 41 RWT 35 capacity 0kW flow 0.83M3/H current 0A Room temps (design temp...
@cycleneil - no, its controlled by an on/off room stat in the kitchen, currently set to 21 degrees, kitchen design temp is 19 degrees, so most of the ...
The rads are actually Ultraheat branded, and the output per size varies slightly between different manufacturers. My installer went with a certain sup...
Exactly, that is why I am increasing thinking it is a compound problem, both the heat pump capacity is inadequate at low ambients and the heat that is...
I wasn't meaning to be harsh (and note that I chose a Midea over a Mitsubishi, for various reasons, including it must be said its low profile design b...
Current (0915h) flow/return temps and top middle rear panel rad temps: Midea controller: Ambient: 7; LWT 47; RWT 41 PHE pipework: Primary in 45; p...
This gets complicated. Firstly there is the nominal output, as listed in the catalogues, usually at a delta t of 50. A correction factor then has to b...
@derke-m - Argghhh!!!! The forum has just deleted my reply. very frustrating. 'Something went wrong with your submission' or words to that effect, and...
@derek-m - OK, here are some minute by minute readings, col head abbreviations as before, csv text format. Ambient throughout was 5 degrees: Time,LW...
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