Ipm Continuity Check - Midea MSMBB-12CRDN1-MP0W Service Manual

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
(+)Red (-)Black
N
U
P
V
W
4.Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester.
Position
Black - Red
White - Black
Normal resistance value
∞
(Several MΩ)
RPG20E(YKFG-20-4-5)
388Ω±8% (20℃)
(Brand: Weiling)
360Ω±8% (20℃)
(Brand: Weiling)
Digital tester
(+)Red (-)Black
U
V
W
(+)Red
Resistance Value
RPG28D(YKFG-28-4-1)
260Ω±8% (20℃)
(Brand: Weiling)
385Ω±8% (20℃)
(Brand: Weiling)
53
Normal resistance value
∞
N
(Several MΩ)
RPG45C(YKFG-45-4-22)
168Ω±8% (20℃)
(Brand: Weiling)
141Ω±8% (20℃)
(Brand: Weiling)