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fosterl2
@fosterl2
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Joined: Feb 2, 2026
Last seen: Feb 24, 2026
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Topics: 1 / Replies: 15
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

The next challenge will be getting 60mCu of water warmed up! - I assume for the initial heating, take the weather compensation off, fix both flow temp...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

@f1p Indeed - I am just waiting to see if I get sent a bill for removing the cascade, but intend to either ask for a refund, or a return of my propert...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

The issue seems to be solved: I found that the plumbers had routed the flow return from ASHP1 into the flow return of ASHP2, hence the whole system wa...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

@f1p Just checked again (with different glasses on!) and they are sliders, not rockers, and set correctly. Looks like separating the cascade will be...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

I am pretty sure that on mine, they are set the other way - the ones that are supposed to be ON have the sticking up bit up at ON side, and are presse...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

So, if the rocker is down at the ON side and up on the OFF side, it is ON? Yes I do have Home Assistant, but it is using the MELCloud integration to...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

I looked at the dip switches on the FTC 7s today. On my units, they are tiny rocker switches, rather than slide up / down. Is the dip switch "on" when...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

I believe there is a single sensor mid-tank - this is the label on the tank This is yesterday's daily graph from MELCloud  

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

Are you saying "Plan B" is sound, i.e. separate the two, but just make sure the settings of both individual units match, or the cascade is sound? If...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

@ashp-bobba If it is not possible in cascade to have 1 unit doing UFH & pool and one doing DHW + UFH / pool when not doing DHW, then plan B is to ...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

@f1p The graphs do show there is about a 3 degree an hour loss of heat, and that is with very little hot water being drawn off - a morning wash, and a...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Ecodan Cascade System Problem: DHW Heating Stops UFH & Pool Output

@f1p I am fighting one battle at a time here... hoping to get someone to say for definite if the SW 1-3 on the second pump is off, it should not then ...

4 weeks ago
Forum
Air Source Heat Pumps (ASHPs)
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