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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Oct 23, 2025
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Topics: 4 / Replies: 229
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks @allyfish, will get back here tonight with results from the codes. Plumber did try I believe 3 speeds on the pump. To no avail, I couldn’t see ...

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

@iancalderbank thanks very much for this. this is the 5-6pm cycle which I’ve been considering just dropping completely leaving us with just two cycl...

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

Yeah I think plumber's blinkers are on. I'm glad finally some movement into giving what you're saying a try though. If he's here Friday (suspect Mon...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks @iancalderbank - I'll pass this on.I've not seen them / or have them mention the primary flow rate (they seem to just do whatever Grant sugges...

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

Forgot to add - the pipework is setup so they can easily isolate before the LLH. I asked how long would it take to replace that and he said not long....

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

Thanks @iancalderbank - I'll keep pressing them. They seem very much blind to it being a problem. I'll press them to swap to another one, and repo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Plumber has suggested they look at the LLH itself to rule that out before looking elsewhere. Basically a bit of trial and error. Running pump at di...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

One of the plumbers here atm who’s trying to follow grants suggestions of trying different speeds on ASHP. Not seeing any change. mentioned I’ve bee...

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

Thanks @iancalderbank - and just for my own learnings - primary side, that refer to essentially what's in the house side v the ASHP side?

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

For got to at you in last post – @iancalderbank Thanks ever so much for your help on this. Will see what this other plumber says, who they're sendi...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

I've sent this all on - apparently Grant have suggested (not sure if before all this or based just on the temp reading photos earlier) - that the inte...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks @iancalderbank - I'll pass this on!

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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