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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Oct 21, 2026
Topics: 28 / Replies: 5525
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RE: Winter climatic curves v Spring/Autumn climatic curves

Very sensible (you, not your installer). I suggest (if you haven't already) you set any TRVs to well above the desired temperature and any thermost...

2 years ago
Reply
RE: Vaillant arotherm plus heat pump frost protection

Im sorry but I really don't understand from what you have said how you are running your heat pump (for example how can WC work when the outdoor sensor...

2 years ago
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RE: Not a good January? My heat pump used 840 KWh of electricity

@roamingbull Whats the assessed heat loss of your house at what design temperature, and whats your house construction? Even estate newbuild is pretty...

2 years ago
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RE: Vaillant arotherm plus heat pump frost protection

OK. Im still not clear what is actually happening. Can you confirm, on 6/12/24 and 7/12/24 at those times, what were you expecting it to be do...

2 years ago
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RE: Vaillant arotherm plus heat pump frost protection

Sunday night was very cold where I am: - 2, I would definitely expect frost protection to kick in in this circumstance and be very worried if it didn'...

2 years ago
Reply
RE: Vaillant arotherm plus heat pump frost protection

Ok. How do you know frost protection is triggering (as opposed to just normal operation)? With the outdoor sensor indoors how can WC work. I'm a ...

2 years ago
Reply
RE: Vaillant arotherm plus heat pump frost protection

We might need to unpack this to work out whats happening. Here is an extract with the paper manual which came a couple of months ago with my unit (t...

2 years ago
Reply
RE: Vaillant arotherm plus heat pump frost protection

Ok, just trying to clarify. So what you are experiencing if I understand you correctly is that when there is no call for heat and the outside temper...

2 years ago
Reply
RE: Vaillant arotherm plus heat pump frost protection

What do you mean exactly by frost protection?

2 years ago
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