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Mab
@mab
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Joined: Nov 25, 2023
Last seen: Dec 21, 2023
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Topics: 0 / Replies: 13
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RE: Is the Grant controller a thermostat?

@mikefl (Belated) thanks for this - i went off down the rabbit hole of exploring your links, then the weather turned mild and anyway and i haven't got...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

@mikefl your data collection is rather better than mine 🙂 . I ought look into systems for reading data - are you reading it from the aerona somehow? ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

@mikefl I'll be interested in that thread too. As an experiment i monitored the HP running the UFH this pm - and i was hoping to see when it would t...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

@mikefl Well, looking at your chart and comparing with my own observations it does look as if it's performing better at -7 than at -3:- at -7 lwt ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is the Grant controller a thermostat?

@mikefl @aceshighThanks, more data always helps. I still don't know what it uses to trigger a defrost, but i do think that there's a minimum run time...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is the Grant controller a thermostat?

@mikefl i think the frost protection is a completely independent thing, and there are settings to tweak for that. I've got that enabled as my installe...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona 3 Help programing

@allyfish have you tried a chofu using the chofu controller? Does it work better than grants setup? I'd be interested to know how you (or anyone who'...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona 3 Help programing

Looks like that's what they've done: the wires that would normally go from the top right of the ep001 to demand heat / demand hw have presumably been ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Thanks, I've made a note of your 42min interval as i have a suspicion there's a minimum defrost interval but haven't worked out what it is. The oth...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Rate the quality of your heat pump design and installation

I think my installers were in the right ball-park when they designed the system, although i may decide that a smaller hp might have been ok, i won't k...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Hi, sorry i don't want to hijack the thread, but i was wanting to ask the experienced Grant aerona 3 owners about the defrost cycle on the grant, and ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona 3 Help programing

Ditto what mike has said: there would normally be a separate timer (programmer ) to set the on off times for heating and dhw, and a room thermostat (o...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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