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iantelescope
@iantelescope
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Reputable Member
Joined: Mar 29, 2023
Last seen: Apr 29, 2025
Profile Activity
Topics: 1 / Replies: 417
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Reply
RE: 12kW Samsung gen 6 short cycling

@william1066 Hi William, With my PWM driver chip not working I have been Controlling Both of my PWM pumps using a Pulse Generator. The Pulse ge...

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

@iancalderbank My PWM System appears to be faulty. Following a Visit from a SAMSUNG Engineer , I asked him "why does my PWM System NOT work." H...

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

@william1066 Hi William, Many thanks for the info from Midsummer ! I am now convinced that my particular SIG/REF output from my Control PCB is ...

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

@derek-m The Signal output from my Control PCB on SIG/REF appears to be faulty or incompatible with the motor load. The Scope is connected to SIG...

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

@derek-m I have got it !!I have TWO Grundfoss cables One with the PWM output on the Black wire the second with the PWM on the the Brown wire. ...

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

@derek-m Delta_T and PWM control. Hi Derek, The "Signal apparent on my SIG/REF pair of pins on my SAMSUNG PCB changes slightly with the Dela_T set...

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

@derek-m Cautionary notes from SAMSUNG ,GRUNDFOS All of the notes from both GRUNDFOS and SAMSUNG cheerfully advise "that if it does'nt work reverse...

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

The PWM SIGNAL output from a SAMSUNG PCB ......... To obtain this signal I changed the Field parameters 4051 for a Delta T of 3 C bringing up the ...

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

@derek-m IHi Derek, will try a load resistor on the SIG/REF pins. Given contradictory information from GRUNDFOS about the Black and Brown PWM ...

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

@iancalderbank Mank thanks ian, Do you know of a SAMSUNG TECH Support that is not pushing You tube videos that are always for a different model ,...

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

@derek-m I have two Grundfos PWM motors of type GrundfosUPM3 FLEX AS 25-75 130 AZA Both pumps can be driven very successfully from a pulse gene...

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

I have now tested my Grundfoss motor on my Primary Heat Pump to Heat exchanger loop. compared to my first, Radiator loop Motor The Radiator m...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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