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JamesPa
JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 13, 2026
Topics: 27 / Replies: 5232
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RE: Help me keep the faith with my air source heat pump installation

If its set to active then the HP will adapt the WC curve (to an undisclosed extent and with an undisclosed timescale) to achieve the set temperature, ...

10 months ago
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RE: Options on flushing my system

FWIW my flow crashed when I started my system up in July to attempt cooling for the first time, the space heating part of it having sat around doing n...

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

If you screw them right down yes, but not if you don't. The ones that came with my TRV4s actually have moulded arrows on them labelled ,+/-  

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

I dont have them I balanced on the LSVs. Its a bit fiddly because they typically only make a difference in the last turn to half a turn (see heat Gee...

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

No vibration issue. However when its minus temperatures and compressor modulation >80% there is noticeable compressor noise. The rest of the time...

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

My single Mitsubishi ilife2, which is otherwise perfection, suffers from exactly this problem and the threshold (30C) isn't adjustable. I've just (ye...

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

The first chart in your post above shows average 0.25kWh consumption. The second confirms that the unit is delivering less than 1kW output. Yet the ...

10 months ago
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RE: Help me keep the faith with my air source heat pump installation

You should be getting better than that at this time of year even though it will be cycling, unless it's really cycling a lot (short cycling). Can you...

10 months ago
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RE: Should Our Water Circulation Pump Be Configured to Run All The Time?

I run my Vaillant on either expanded mode (either end of the season when solar gain is a 'problem') or no room influence. Certainly on 'no room influ...

10 months ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

You are correct you dont need the second pump if there is no LLH/Buffer (unless there is a 'head' problem with your downstream system) Its entirely ...

10 months ago
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RE: Grant 13kW Aerona3 - issues getting zones to temp

He may need to tweak a couple of settings. There is definitely on the r290 a setting for no system separation/buffer/llh. Don't know what it does (I...

10 months ago
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