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Crimson

@crimson

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Honorable Member

Joined: Jan 16, 2024
Last seen: Nov 13, 2025

Topics: 4 / Replies: 279

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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

5 days ago

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Air Source Heat Pumps (ASHPs)

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

5 days ago

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Air Source Heat Pumps (ASHPs)

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…

5 days ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

No idea, they may have done that when did the 50L install, but didn't mention it. He was saying the primary circulating pump (one bottom ri...

5 days ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

…and it's not the water pump, ramped up to 28l/min - 30l/min, then quite soon after dropped to 20l/min. Thankfully Grant had the sense to also send ...

5 days ago

Forum

Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

Shortly installer is coming to replace the offending pump &/or the pcb controller (can't remember the term). 1 living room sitting at 1...

5 days ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

Oh completely, he even said without the hydraulic break either a secondary pump would have taken over or it just would have obviously not bee...

1 week ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

That's good to hear. I truly hope this 10 minute replace of the pump will do the job and I can sign off this project and move on!

1 week ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

Here it is: (Ignore lack of lagging for now, they're coming back tomorrow/Friday to sort that)

1 week ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

Hi @toodles , hope you're keeping well! It's been plumbed in as a 4 port LLH/volumiser combination. Much to my annoyance when the specialist wanted...

1 week ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

@jamespa be very interested to know your thoughts on this. A 6L LLH replaced with a 50L one…could that cause more issues? I'll hopefully have the ...

1 week ago

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Air Source Heat Pumps (ASHPs)

RE: Grant 13kW Aerona3 - issues getting zones to temp

So another update! The 50L is in, the plumbers flushed and refilled system. They ran it for a good couple hours, and…… …the Grant ASHP kept shor...

1 week ago

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