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Gary
@gary
Member
Honorable Member
2644 kWhs
Joined: Feb 8, 2023
Last seen: Mar 10, 2025
Profile Activity
Topics: 1 / Replies: 304
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RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks Higher flow temps will get less cycling but at the cost of efficiency and you will find then it will run for a couple of hours and then re...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

@clockworks I wouldn't change the flow temp yet, try and see if its any better at 38C if you drop the flow temp cycling is only going to get worse any...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

The flow wasn't massively out, I'm no heating engineer but a heat pump needs constant flow, so the differential flow setting doesn't seem right and th...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan 6kW - is it "cycling", or normal operation?

Can you post a picture of your LLH how much volume does it have? What is the flow speed in your primary circuit, go to service menu, running informa...

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

You are correct primary is the top right from the heat pump, secondary pumps round the rads you can’t break anything by turning them down. Turn prim...

2 months ago
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Air Source Heat Pumps (ASHPs)
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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...

2 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...

2 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 ...

2 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...

2 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

2 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...

2 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...

2 months ago
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Air Source Heat Pumps (ASHPs)
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