Midea MSMBB-12CRDN1-MP0W, Service Manual

Page: 55 / 70

53
3. IPM continuity check
Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.
Digital tester Normal resistance value Digital tester Normal resistance value
(+)Red (-)Black
∞
(Several M
Ω
)
(+)Red (-)Black
∞
(Several M
Ω
)
P
N U
N
U V
V W
W (+)Red
4.Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester.
Position Resistance Value
RPG20E(YKFG-20-4-5) RPG28D(YKFG-28-4-1) RPG45C(YKFG-45-4-22)
Black - Red 388
Ω±
8% (20
℃
)
(Brand: Weiling)
260
Ω±
8% (20
℃
)
(Brand: Weiling)
168
Ω±
8% (20
℃
)
(Brand: Weiling)
White - Black 360
Ω±
8% (20
℃
)
(Brand: Weiling)
385
Ω±
8% (20
℃
)
(Brand: Weiling)
141
Ω±
8% (20
℃
)
(Brand: Weiling)