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damonc
@damonc
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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  

10 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 ...

10 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...

10 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...

10 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?

10 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...

10 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?

10 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...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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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...

11 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...

11 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 ...

11 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...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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