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BobTSkutter
@bobtskutter
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Joined: Jan 11, 2025
Last seen: Jan 6, 2026
Profile Activity
Topics: 1 / Replies: 93
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RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay this is great news. I'm pleased we're getting somewhere. There's a noticeable step change in the power output starting with the 18:00 re...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Hello, Sounds like the flow goes through the magnetic filter before it gets to the PEX, so that's good. 22mm and 1.8m3/hr is about 1.3m/s. I thin...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

A brief explanation of reading vendor pump curves. Here's a simple heating system. It's got 3 radiators, each one can be turned on or off separatel...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Something else crossed my mind when I posted on a discussion about the order components should installed. You mentioned you reversed the direction o...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Hello All,I'm conscious I've turned up on the forum and am writing these long posts full of apparent technical detail. I've been troubleshooting heat ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mixing of pipework/components' with different internal dimensions - theory vs reality/practical approach

Hello All, remember your designing a loop transferring liquid water. The pump just moves the liquid round in circles. It makes no difference to syst...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay I'll put something together about pump curves and system curves. But to help you, I suggest the following: Open all the TRVs and locks...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Hello, I can explain all the pump curve information, but it will take a while for me to put some pictures together. For now, lets work on the basis t...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

^Hey, look at that, it worked 🙂 OK, This is a pump curve. The top one shows Head against volumetric flow at different pump speeds. The chart show...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Hello again,I wonder what's going on here? The system seems to have landed at an equilibrium point. LWT = Set_LWT and the compressor has slowed do...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Hello,I'm not very good with using quotes from forum posts, so I'll try to use headings insted.How did I calculate the secondary flow rate?If you igno...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I found an install manual for an MD16IU-008DW unit. Can you find the value of dT1SH? It might be in "ServiceMan / 3. Heat mode settings" The manu...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
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