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Grantmethestrength
@grantmethestrength
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Joined: Feb 1, 2025
Last seen: Oct 24, 2025
Profile Activity
Topics: 6 / Replies: 118
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RE: Grant Aerona3 - Home Assistant control via Modbus

Am I right in thinking the second set point is configured using the zone 2 settings?

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant Aerona3 - Home Assistant control via Modbus

@johnmo Interesting, I wasn’t sure what the second setpoint was for but I like this strategy! I am a bit confused by this though. Do you mean co...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

Hi James, I would slightly disagree with this and maybe we are outliers due to our location but wind is a huge factor for us, which means I also agree...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

How I envy you guys and your stupid warm feet!!!!!! When we eventually get around to tackling renovating the downstairs I am going to try and convince...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

@majordennisbloodnok I deffo don’t disagree I would love for it to just chug along and I have got it working pretty well, the thermistor means I am no...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

And I also did a thing!!!!! In my quest to learn all the things I have created an AI agent that I will be adding to, that can search all things Chofu/...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

@uk_pete_2000 Yeah we get massive solar gain on half of our house but as soon as the wind changes it wicks away the warmth like no ones business, the ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

@johnmo, yarp I used the Chofu manual to map all the parameters and now have good monitoring of the system, adding the thermistor to the tank has als...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

@uk_pete_2000 Cheers for the support. I am going to start populating the various helpers, automations and scripts I am creating as and when I create t...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

@johnmo I have the Grant CP04 controls which are practically pre-historic, I want to be able to have granular monitoring and control in order to diagn...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

Good evening everyone, I have been busy beavering away and have (hopefully correctly) mapped all the parameters and Modbus registers, there are a fe...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is this normal? Click of the DHW returning to space heating

So the Lone Ranger returned today! Even though we thoroughly described the fault and them agreeing it was probably the diverter valve, geuss what they...

6 months ago
Forum
Air Source Heat Pumps (ASHPs)
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