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m1kegibson
@m1kegibson
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Joined: Jun 23, 2025
Last seen: Jul 3, 2025
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Topics: 1 / Replies: 7
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

Not yet. I am away at present so will do so when I am in front of the controller.

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

Hep. Max drop is 10C. Tried changing and it 5C made no difference. As you say, DHW set to Constant, target is 50C with 10C max drop. I think I will tr...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

The settings for DHW are the defaults with the target set to 50 and drop set to 10. The issue is that even when the water temp drops well below 40 it ...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

A couple of pics. One shows temperature of water in tank (report from MELCloud app) over course of 24 hrs water in tank dropping to close to 30C and a...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

It’s definitely not in holiday mode (no suitcase symbol). I think it’s in “constant” mode but not sure I know what “manual” mode is? Can you illuminat...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

@robs @jamespa Thanks for your input. I will explore/suggest the engineer looks at flow rates. The Smart Grid function would appear to be disabled (...

11 months ago
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Air Source Heat Pumps (ASHPs)
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RE: Mitsubishi Ecodan Fails to Heat Water despite temperature drop

Thank you for that. I will tell them to check flow rate. As you say that seems schoolboy but given their only suggestion so far is to turn it off and ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Mitsubishi Ecodan Fails to Heat Water despite temperature drop
11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 20
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