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webcmg
@webcmg
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Joined: Jan 5, 2022
Last seen: Apr 3, 2026
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Topics: 4 / Replies: 110
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@alec-morrow I'm coming to the realisation that this is indeed the problem. There is a single zone and no electronic mixer. We have a VRC700 indoors i...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin do you know or can you measure the flow temp to and from your radiators and ufh? Upstairs still freezing, rads cold despite 3 litres per minute...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Posted by: @colin Posted by: @webcmg @colin You know you want to get the problem sorted when you get out of bed to set this up! I also ...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

No, I think there is a pump for each manifold and actuators for each zone. Will try this if Colin's approach isn't working. Thanks.

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

@colin You know you want to get the problem sorted when you get out of bed to set this up! I also have room temp mod set to "none". Do you have Adap...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Thanks going to give this a try...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

And I found out that it was Vaillant themselves who 'outsourced' the system design... sigh. @colin assume your setup has a controlled mixer?

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Wow, this sounds incredible. When you say max assume you mean any TRVs and thermostats at say 25 deg c or something? What is your desired temp set at ...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Immersion is off at the switch - how might I identify a backup heater? I think the difference in values is probably just a timing issue.

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@Derek-m @kev-m @alec-morrow @mike-patrick @mattengineer General update. Vaillant attended and resetup the controller and checked the glycol levels...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

Does anyone happen to know the current month energy consumption update interval for the 700/6 controller? It certainly isn't realtime (no idea why no...

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: High air source heat pump running costs – Vaillant AroTherm Plus

Yes, thank you. This is extremely helpful.

5 years ago
Forum
Air Source Heat Pumps (ASHPs)
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