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Last seen: Jun 10, 2026
Emptying the NR schedule will turn off NR mode yes. Im not sure you have a reason to do so yet though. With such a small reduction in O...
Not surprised by that. FWIW my Vaillant has done more or less exactly the same. Its COLD out there! With those figures I get an overall SCOP of 4, ...
Fair enough (the raging). Try not to let it upset you (easier said than done I know). Unlike some less fortunate people you remain in control it seem...
I think that's what they do, so they are varying ft. It would be good to see some plots at various oat values
No cycling there except possibly at midnight on the first day. You would expect so but don't forget cop varies with oat also. Also depends on how l...
Possibly. I haven't yet worked out what Vaillant do with water pump speed as I can't monitor it and don't have a reason to care. Why is it a 'proble...
So is the flow temp changing as well or is that fixed?
Yes but (a) you are talking Facebook and (b) it was the coldest day of the year so far so hardly surprising (+ all the things you say above)
My strong suspicion is that if a heat pump would otherwise cycle, particularly if it would otherwise cycle with short on time, then setting it to idle...
Can you clarify why the heat pump seems to go off altogether for several hours each day. [/quote] That is because I run in expanded mode and durin...
Not great. Average run time < 1 hour. Suggests cycling on thermostat or due to oversize. However not that many hours either, when was it fitted? ...
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