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william1066
@william1066
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Estimable Member
Joined: Jan 5, 2023
Last seen: Feb 13, 2024
Profile Activity
Topics: 0 / Replies: 206
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Reply
RE: 12kW Samsung gen 6 short cycling

I was not referencing length v width, they are the same, I was talking about number of pulses. The pump controller is measuring duty cycle (i.e. widt...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: PWM pump or not?

How heavy is the cylinder once filled? 😀

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: 12kW Samsung gen 6 short cycling

I suspect this is your measuring equipment not having enough resolution/bandwidth. The minimum pwm frequency for the grundfos is 100hz, so you should...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

The speed should be based ONLY on the duty cycle, which is independent of the number of pulses, but is dependent on the pulse width.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

Exactly, but Samsung specific, of course.

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

I should have been clearer ... and this is Samsung specific ... The modbus module MIM-B19M does not know how to talk to the heat pump to respond to so...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

I am sure you are correct. I will collect the evidence [of it not working] and send it to Samsung [not that I expect much out of that] Their latest...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

The manual says that it will only move from 50-100%. Again, once I get mine installed I will monitor the 10v signal coming out of my PWM to 0-10v con...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

I will do some tests on this, but I suspect that there is a point where the samsung control logic decides you don't actually have a PWM pump and disab...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting Home Assistant to a Midea Heat Pump

I am not sure how you do this for your heat pump. I had the same issue on the Samsung when I did not follow the instructions on how to setup the modb...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

You need to enable PWM in the settings. Check FSV #4051 for more information. I also found a new version of the samsung manual online, seems to ha...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 12kW Samsung gen 6 short cycling

I put a scope on my PWM output (even though I don't have a PWM pump). It does send a PWM signal but mostly sits on max. There are two types of PWM ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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