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MikeFl
MikeFl
@mikefl
Member
Estimable Member
Joined: Apr 17, 2023
Last seen: Mar 23, 2026
Profile Activity
Topics: 1 / Replies: 127
AllTopicsReplies
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
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

- can you clarify what this mean, please? Did you move into a property with the ASHP already installed (under a previous owner) or did you have the AS...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

@derek-m @iancalderbank In the Grant/Chofu docs it's referred to as 'defrost temperature', so that's what Ive labelled it. I'm guessing it's a tempera...

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

Those valves you show are either open or closed - there's no 'partially open' option. They should be in the 'auto' position (far right) but they have ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

I've noticed three types of Defrost Cycle (or at least their impacts on performance) which are all nicely shown in today's data. Overnight it was...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Defrost Cycles - How Common Are They?

Last Sunday, it was average -1.3C and very damp, so was in "defrost hell" which is every 40ish mins for a Grant: yesterday, it was +1.3C and dry, ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona circulation/system pump staying on

There's also a parameter (41 22 I think) which controls how long the system pump runs after the compressor is off. I don't think this can run to hours...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP flow through pipes is noisy and preventing us from using at night......looking for help.

@dannymoss23 Yes - Constant Curve is Constant Speed (constant speed is a poor name, but you can see why it is that). Proportional Pressure is NOT reco...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP flow through pipes is noisy and preventing us from using at night......looking for help.

Hi - two things I've found reduced the 'flow noise' I was getting, might help you too: 1. Check for trapped air in your system i.e. bleed rads, and ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona circulation/system pump staying on

43 13 = "Backup heater set point during Frost protection" which I guess means that if you have a backup heater, that's when it will start to help with...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona circulation/system pump staying on

I'm close enough to the pump to hear it running, but the compressor isn't on, just the pump. And it ties in with the outdoor temp being between 3C and...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona circulation/system pump staying on

I've just checked on my controller and Frost Protection symbol isn't on, even though Frost Protection is running. The explanation of all of the symbol...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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