Last seen: Jan 13, 2026
Yes, sorry.
Thanks. Are you saying night shift is 'on'. If so what are the parameters for it?
should have read "but the evidence isn't entirely consistent with that:"
A lmost certainly yes to the first half but in a way could be caused by oversizing. Oversizing means bigger rads. Bigger rads means more output at a...
Thats an assumption you are making and it may well turn out to be true, but the evidence is entirely consistent with that: In the first plot you sha...
Its nothing to do with the heat pump of course, something about the house. It could just be that its very low heat capacity (which can happen if all ...
Now that really is nuts. Hopefully tech support dont suggest to downsize the radiators!
Yes but it reaches a higher temperature than the previous defrost cycles, for which there must be an explanation. This might give a clue to why the r...
Thanks for the extra info. A couple of questions and some comments TWI being the buffer? or something else? If its the buffer 4C is a bi...
@trebor12345 Good data, will examine more closely before commenting. Do you have IAT for same period? Can you clarify what controls the ...
0.5 C per hour is quite fast. 14kW is enormous, how big (floor area) and what construction is your house Increasing emitter size is alm...
I suspect, but have no evidence, that defrost is very variable according to location and time. There are places in the UK that are very humid and pla...
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