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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Jan 28, 2026
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Topics: 4 / Replies: 300
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RE: Grant 13kW Aerona3 - issues getting zones to temp

So its clear temps are downward trending. Suspect nightmode off is the cause. its relatively cooler temps now outsife over night so I wouldn’t expec...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

  Sorry James a typo there. Eskimos CAN perform at a low delta t. Sausage fingers here. The 8C expected delta set by the Grant ASHP by default ...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@jamespa i think the challenge is in the house, its an existing 1970s structure thats been highly insulated, basically gutted and celotex up to 100...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks James, will get back to you.   as a reminder theret 3 zones. Ground floor front (5 rads), ground floor rear - UFH and first floor (rad...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Not able to keep up with both posts but: Night mode was forced constantly. So not just at night but at 60% constantly, assume that's 60% modulation ...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

  Thanks will do. Don’t expect a huge uplift in temps but looking at the at the app its clearly dropping and dropping. The WC we ensured was sa...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

  Thanks James. Am back Sunday night. Will put probes in. I do have probes on the 4 ports of the LLH, neglected to take a photo as the heatin...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Seeing no effect from circulating pump replacement and no positive effect from 50L LLH upgrade To summarise history of this saga: LLH back to fron...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

He showed me a photo of 5-10l/min.   However am not convinced this pump was the issue. Realised I have photos of the flow setter from early ...

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Ok he's told me he'd like to see depending on what it's doing between 18l/min - 28l/min. Have asked what it was like before

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

This is what I'm seeing during the DWH cycle currently.   Will check again from 4pm when heating is running  

10 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

I'm only seeing 22l/min on the flow setter with the hot water cycle running but I'm none the wiser if that's good or not…

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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