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damonc
@damonc
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Active Member
Joined: Feb 4, 2025
Last seen: Dec 8, 2025
Profile Activity
Topics: 1 / Replies: 22
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Reply
RE: Grant Aerona Short Cycling

that’s great, thanks  

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

I’ve made a web app which allows you to visualise the effect of changing weather compensation parameters on the WC curve/slope. You can install it on ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

thanks , that makes sense and I have seen that cycle happen but I agree with @steam-powered though, my cycling definitely isn't always defrost, the de...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona Short Cycling

@grantmethestrength wow that's quite the project, very interesting but my Aerona is 2021 and so I don't think has the required modbus bits as when I e...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona Short Cycling

@jamespa that’s possible I guess, is there an automated defrost limit temp?

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

@steam-powered yes about 1-1.2 kw. I’d expect the same I don’t get why it can’t modulate smoothly it’s almost as if it has modulation steps. Maybe som...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

@grantmethestrength that looks interesting, can you share the info on accessing the modbus and HA please? How old is your Aerona 3?

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

@steam-powered that’s all really interesting. My experiment of a lower flow temp at the cold end didn’t work out, the house lost too much heat so I’ve...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

@steam-powered I'm currently running 30@-7 23@15 so currently it's target temp is 26 at OAT of 5.5 and it's running steadily at 700watts. That's a rea...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona Short Cycling

@steam-powered I'd suggest dropping the cold weather end of your curve down, what are your curve setting now? It sounds like your ASHP is oversized an...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona circulation/system pump staying on

@mikefl thank you, I've changed 4200 to 2 and now the main pump is starting up every 5 mins for 3 mins to allow the temp to be taken then turning off ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Should Our Water Circulation Pump Be Configured to Run All The Time?

there's a detect cycle setting (4200) on the old grant controller which controls the internal pump. It means the internal pump only runs when the comp...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
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