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Tasos
@tasos
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Joined: Nov 25, 2024
Last seen: Nov 9, 2025
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Topics: 0 / Replies: 49
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RE: Testing new controls/monitoring for Midea Clone ASHP

I' d like to see a graph of that. It doesn't make sense to me, unless he means that at low temps, the pump runs at constant speed.  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

I am really surprised that the IAT is steady, whereas LWT is fluctuating a lot. How can this be ?  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

Is the WC "tweaked" ?. Because that would explain this behavior.    

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

By what rule would flow be modulated ? Is it not the primary circuit flow ?  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

I am not sure the chart is accurate. Because how is it that T1S changes when OAT is constant (just before 21.00) ?  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

I think the flow rate is meant to be constant. In my machine is set at 0.36 m3/h. But I am not sure of this. On the other hand, why shouldn't it be ? ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

This is to be expected, isn't it?  

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

I don't think I am. The order is: 1. The system orders a defrost cycle. 2. The OAT sensor sends erroneous measurement (warmer). 3. The set LWT (...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

Ha, ha true, but I am not saying it isn't any good, I am saying it is not that good. A simple argument is that it is open loop. And to answer your "an...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Testing new controls/monitoring for Midea Clone ASHP

@benson T1S is actually the LWT defined by the WC. However, I wouldn't describe the behavior as "overshooting", but rather "oscillating" around the se...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

The refresh time of climate-related curves in heating mode can be changed but not less than 0.5 hrs. This explains the LWT behavior. Further, since ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@pash44pump Referring to the problem of rooms with different heating demands, I would use a recently available option which is thermostatic valves wit...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
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