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SUNandAIR
SUNandAIR
@sunandair
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Noble Member
Joined: Dec 30, 2022
Last seen: Jul 9, 2025
Profile Activity
Topics: 5 / Replies: 495
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RE: How to See Ecodan Power Usage

Hi Kev-m. We had the same missing data on our ftc controller back in January. Mitsubishi asked for our serial number and the installer came out and re...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to See Ecodan Power Usage

Thanks Derek, based on info at point of post nothing has been ruled out. There are known, identical performance issues attributed to a small number ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to See Ecodan Power Usage

I can see from your last picture above that you are indeed set on Weather Compensation. looking at your last picture your left hand button, when pr...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to See Ecodan Power Usage

You may have a faulty ftc6 controller!? do you have auto adaptive function? Thats the “room temperature” option, as opposed to “weather compensati...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Working with my Ecodan

@willen-john wow. That’s a big improvement. 👍🏻

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Sensors positioning for Ecodan 8.5kw ASHP with pre-plumbed cylinder and buffer

@tadpole hi. Thanks for the further information. I can see that the reservoir of hot water may have been proposed to feed the two underfloor heatin...

2 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Working with my Ecodan

Thats good to hear. One possibility removed. It sounds like the Secondary Return, re-circulation, as described above is a reasonable contender… your...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Working with my Ecodan

I think, someone in the past also had a 3 port valve stuck partially open which can mean that while the heating is on the circulating water, at a lowe...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Sensors positioning for Ecodan 8.5kw ASHP with pre-plumbed cylinder and buffer

Hi Tadpole I think you’re wise to let the installer and manufacturer fully install and commission before trying to fix anything. However, your 4 ...

2 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

@jamespa perfect…. thanks James Added (We tried a number of secondary pump settings until we got the lowest change in DT but we couldn’t do much...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

hi Ian, here is my sketch again what do you mean that the DT Is the same both sides? The sketch shows a 1degC drop in one direction and a 1degC rise...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Low Loss Header is losing 1.5c from flow temperature

@iancalderbank thanks Ian yes there is a drop in flow temp across the LLH but there is a more or less equal rise in return temp across the LLH. Thes...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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