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@heat-pump-newbie
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Joined: Dec 11, 2021
Last seen: Jun 6, 2025
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Topics: 11 / Replies: 157
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RE: Daikin Altherma 3M in Buckinghamshire

Also Derek, my system kept losing pressure as a valve was not working inside the indoor unit. I could see the drop in pressure on the controller scree...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

Morning Bridget In the Tank menu you can set these hot water temps, Comfort and Eco (mine are 49 and 44). Then go to Tank > Schedule and set ...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

@hydros Is the grey cylinder in the photos at the beginning of this thread a buffer tank?

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

@witchcraft Unbelievable !! And was it ?

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

@derek-m It's crazy that simple things like those on the list weren't done, not in my case certainly. Filling out that table would have been a start...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

Hi - our hot water is on Schedule + reheat. The reheat setpoint is 40 deg and hysteresis is 10, and it only reheats occasionally. Still noisy... arg...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

Hi Bridget. It looks like your immersion (ie Booster Heater) has been used much more than it should have. The accepted procedure it to run a disinfe...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Weather compensation and air source heat pumps

@alec-morrow Are you familiar with Daikin Altherma 3 controllers ?

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

Argh ! How frustrating ! You'll notice the change in temp of the radiators etc, but they should stay on for long periods so the rooms shouldn't cool d...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

@bridgetjohn Great ! The set point curve shows that the current radiator water temp (LWT) is still hot from before, looks like it's the full 60 deg as...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Daikin Altherma 3M in Buckinghamshire

Not really sure there's anything we haven't mentioned... Check Setpoint Mode is set to Weather Dependant What would you like the room temp to be...

3 years ago
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Air Source Heat Pumps (ASHPs)
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RE: Weather compensation and air source heat pumps

@hr_3 I've altered my schedule to be 21 deg all night and day, so it never switches off. With the curve as it currently set those temps are approx +...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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