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Gary
@gary
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Joined: Feb 8, 2023
Last seen: May 23, 2025
Profile Activity
Topics: 2 / Replies: 346
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

If you have a mitsubishi preplumbed cylinder then its unlikely to be a low loss header, although that's what they call it, it has no volume its just a...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@jamespa, I can't check modulation but it will be running flat out but I think my is slightly undersized so don't really have any spare capacity to co...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

Here is an example of what my 8.5kw Ecodan did last night when it was very damp and 1C outside. It defrosted every 50 mins, that takes 5 mins and ...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: hum/whine from Wilo circulation pump

@grumpidoc so as it’s one zone you should only have that one pump for the heating. As I posted above you should be able to turn that all the way down...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: hum/whine from Wilo circulation pump

Correction forgot to x 60 to get to L/min otherwise its in seconds

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: hum/whine from Wilo circulation pump

@grumpidoc Its from the mitsubishi databook see extract below Do you have an Ecodan preplumbed cylinder or a different model, a picture of your cy...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan 8.5kW Monobloc (FTC5) Defrost Mode

@alsocold123456 It doesn't sound like there is a problem to fix with your system that is pretty much what mine is doing in this damp cold weather. A...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Vaillant Arotherm ASHP gets noisier when it gets colder outside

@tallmarc stated noise levels are made at a defined outside temperature not the worst case which is what we currently have in the depths of winter, mi...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan ASHP general set-up and efficiency

@ngillam Depending on your controller the pump speed for the HW can be controlled in 2 ways newer versions have pump speed in the service menu for bot...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: ASHP for small garage and workshop

For such a small space wouldn’t A2A be better than A2W and you get cooling in summer.

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan ASHP general set-up and efficiency

As I said in a previous post your max duration is set to 90 mins you need to change it to at least as long as your schedule if you want it to heat for...

4 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan ASHP general set-up and efficiency

The only suggestion I have is there is an eco and std setting for HW heating, if it’s on eco change it to std it will make the HP worker harder for t...

4 months ago
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Air Source Heat Pumps (ASHPs)
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