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MikeFl
MikeFl
@mikefl
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Reputable Member
Joined: Apr 17, 2023
Last seen: Dec 21, 2025
Profile Activity
Topics: 1 / Replies: 126
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Has the flow rate now increased if you look at the regulator below the pipe where the mag one sits? Balancing the flows across the LLH is something ...

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

Isha killed my internet so out of loop a bit on this one, but has the auto bypass valve been checked? It should be set to almost never operate as your...

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

I think Grant have recognised how unfriendly the controller is, with bringing out (soon) there own 'smart' controller, but I'm not expecting this to b...

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

@crimson So far as I understand it, before the plumber started fixing things (i.e. when you had the blown DHW controller) most of the CH zones were wo...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Another ASHP Performance Thread - 13kW Grant Aerona

Your conclusions (1) and (2) are probably valid, and common for most ASHPs it seems - the defrost cycles nobble performance, as although they only tak...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Another ASHP Performance Thread - 13kW Grant Aerona

The standard flow regulator which comes with the Grant (and I think yours looks like one), you read from the bottom of the float, so 29l/m if I can se...

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

If you can get them to focus on the flow rate, which seems to be the main issue. Playing around with the HP parameters is really tweaking to help with...

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

As @allyfish has pointed out, that flow rate is an issue - the 'square-headed' screw-like thing below the gauge window on the regulator is what contro...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Updates and announcements

@editor Confirmed. Just got the notification for this mention. Thanks 😀

2 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson A = Secondary circulation pump B = Magnetic filter C = Low Loss Header D = Flow Regulator? E = Diverter Valve? The question ...

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

The problem with looking at the flow and return temps on the controller is that they are constantly changing, so it might look good at one moment (and...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Updates and announcements

Same here - no notifications so far today. I did receive a notification around 15:00 yesterday, so it doesn't seem to coincide with the upgrade.

2 years ago
Forum
Introductions, Forum Rules & Updates
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