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rhh2348
@rhh2348
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Joined: Feb 2, 2024
Last seen: Dec 30, 2025
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Topics: 9 / Replies: 93
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RE: Ecodan unable to hit legionella target temp - what's the consensus?

3 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan unable to hit legionella target temp - what's the consensus?

(irrelevant content removed)

3 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan unable to hit legionella target temp - what's the consensus?

Edit: removed info relating to later FTCs (not FTC2) after realising I didn't read the OP carefully enough... *groans*

3 weeks ago
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Air Source Heat Pumps (ASHPs)
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RE: Question about Heating Pump Operation mode – Ecodan FTC6 v20.06

This isn't an exact reply to your question, as I don't have the same hardware as you, however if you want the primary/circulation pump to stop shortly...

3 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

Yes, can do that, though I ran the heating again from cold-ish this morning and got a different set of behaviours so will analyse and put up relevant ...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

...which I assume started shortly after this post. I actually found that thread a couple of months ago but had yet to go back and digest fully. Doing...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

Thanks again for a response, @jamespa - will come back to it in a bit but wanted to highlight something happening at present first. The house has ha...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

The low flow temp has been arrived at by a combination of repeated balancing of the rads such that the one furthest away has sufficient minimum output...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

Not so - I mention reduced efficiency in the OP. If I could reliably achieve runs > 45 mins at a time with no effect on CoP/efficiency, I probably...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

As I stated in the OP, I want to understand (and try to rectify) the operating inconsistencies - short-cycling can occur throughout the night with a r...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

I know why you say that but, having a quick look back over the past few weeks of data only, I can see cycles as little as eight minutes in length.Logi...

9 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Ecodan - is there actually such a thing as a 'minimum' flow temp to avoid cycling, and why if so?

[quote][quote]It should, however I imagine it's actually just a too-aggressive algo; logic would say that the unit should stay at the maximum flow tem...

9 months ago
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Air Source Heat Pumps (ASHPs)
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