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Josephiah
Josephiah
@josephiah
Member
Eminent Member
Joined: Oct 29, 2023
Last seen: Dec 6, 2025
Profile Activity
Topics: 3 / Replies: 34
AllTopicsReplies
Reply
RE: Icy cold weather, weather compensation and consumption

@toodles Quite. I'd first looked at all this seriously back in 2021, but then life got busy and I didn't follow through - man, I was kicking myself la...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Icy cold weather, weather compensation and consumption

@toodles thanks, interesting to hear. I'm not expecting to be able to shift all of our demand into the cheap periods, by any means, but should be able...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Icy cold weather, weather compensation and consumption

Well, that was an expensive weekend, certainly. OAT varied between 0 and -9°C over Sat/Sun, with heating (exc. DHW) consumption of 52.8 and 54.4 kWh ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

Well, it seems to be fixed. The controls are making proper sense for the first time. Maybe now I can have another go at those heat curve and setback e...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant AroTherm controls issue - solved!

This evening I am allowing myself a smug/wry smile, as after 3 weeks, 2 installer visits and various attempts to describe the problem to Valiant, I be...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

@drew-pa On a side note: do you know what the button on the radio receiver box (with the "two rotating arrows" symbol) does? I can find no mention o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

@drew-pa Yes, they seem to be. The downstairs master unit can make any changes (including the installer settings). The upstairs remote unit can only d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

@drew-pa Just the two sensoComfort units (main controller in downstairs zone, remote unit in upstairs zone), plus the external sensor for weather comp...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

Thanks, understood. It's running on WC and modulates the temperature sensibly. There plenty of capacity in the system, and the building warms fine d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Vaillant AroTherm controls issue

Update: After installer performed full factory reset, we tried first night with constant temp - worked fine. Then I applied overnight setbacks 1°C...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

Agree with just about everything you've written there, but I think you may be missing a point (although you may well have covered this elsewhere) abou...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Do setbacks save energy without compromising comfort?

Agreed - my analysis is over-simplistic so far - we should expect to reduce consumption purely because the average temperature differential to outside...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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