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

thatā€™s great, thanks  

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

Iā€™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 ...

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

2 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...

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

@jamespa thatā€™s possible I guess, is there an automated defrost limit temp?

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

@steam-powered yes about 1-1.2 kw. Iā€™d expect the same I donā€™t get why it canā€™t modulate smoothly itā€™s almost as if it has modulation steps. Maybe som...

2 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?

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

@steam-powered thatā€™s all really interesting. My experiment of a lower flow temp at the cold end didnā€™t work out, the house lost too much heat so Iā€™ve...

2 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...

2 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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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 ...

2 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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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