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Gary
@gary
Member
Honorable Member
2649 kWhs
Joined: Feb 8, 2023
Last seen: Mar 11, 2025
Profile Activity
Topics: 1 / Replies: 304
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Reply
RE: Mitsubishi Ecodan stuck on immersion symbol

@ak2024 that is the HP cycling on and off 2/3 times an hour usually happens at milder outside temps when the flow temp is around 30C or less. I have ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Analysing MELcloud heat pump graphs

@boycey what you have there is really bad cycling 10 times an hour. if you increased the flow rate this will have only worsened it as it has less ti...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

@boycey in milder temps you have to limit heating with the thermostats so that’s set at 22C to turn the heat pump off till it cools back down again.

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: The Definitive Guide to Weather Compensation and Curves for Air Source Heat Pumps

The Ecodan WC curve doesn’t have presets like you see in other systems it’s fully customisable. So you can set the high and low end at any OAT and ch...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ASHP and how it should run and potential kw consumption?

My heat pump by luck is sized correctly and defrosts hourly. All you can do is keep the flow temp to the minimum you need and keep it running so you ...

2 months ago
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Air Source Heat Pumps (ASHPs)
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RE: ASHP and how it should run and potential kw consumption?

I have an 8.5kw heat pump and its currently running at 36C and pulling 2kw so not miles away from yours, when it runs at 45C its will pull 3.5kw, ther...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Analysing MELcloud heat pump graphs

@boycey If you are running at 26C and the house is 20C then your UFH isn't going to be able to get rid of any heat as the room temp is too close to th...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Analysing MELcloud heat pump graphs

if you click on tank temp and set temp in the legend it will remove them from the plot it will rescale you will then be able to see what the flow tem...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Analysing MELcloud heat pump graphs

That will just prevent the heat pump from setting a temperature lower than 30C, its easier just to adjust your weather compensation curve. Can you po...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Analysing MELcloud heat pump graphs

Just to add my 2p, I have an Ecodan and UFH, to avoid cycling on and off then we need set the flow temp at a minimum of 32C, from your plots it looks ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: L9 error with Mitsubishi ecodan heat pump

As you state L9 is flow rate error, if you go to the service menu when the heat pump is running and then go into running information and put in code 5...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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