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2019ashp
@2019ashp
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Joined: Feb 16, 2026
Last seen: Feb 18, 2026
Profile Activity
Topics: 1 / Replies: 5
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Reply
RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

@jamespa the pipes in my case bear downwards when existing the DHW tank, so may be less prone to airlock.. pic to follow later

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

@ashp-bobba thanks - I'm away for the day now but will do later, cheers

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

@jamespa Of course that's what he meant, I was half asleep 🙂 I had look for a way of bleeding this last week but there doesn't seem to be a blee...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

Cheers, yeah there's no AAVs or thumbvalves approaching the outdoor unit. One of the first things I done was check the AAV on the outdoor but itself...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3

Thanks for the reply. Yeah there isn't a mesh filter or strainer anywhere in the system, just the mag filter which is clean. It probably is due a s...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
ASHP fault for DHW only with high set point – P1 error on 6kW Grant Aerona 3
8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 12
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