Midea M2OC-18HFN1-M Service Manual page 94

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. AC Fan Motor.
Measure the resistance value of each winding by using the tester.
Position
Black - Red
White - Black
Measure the resistance value of each winding by using the tester.
Normal resistance
value
∞
(Several MΩ)
RPG20B
381Ω±8% (20℃) 342Ω±8% (20℃)
(Brand: Weiling) (Brand: Dayang)
267Ω±8% (20℃) 253Ω±8% (20℃)
(Brand: Weiling) (Brand: Dayang)
Digital tester
(+)Red (-)Black
U
V
N
W
(+)Red
Resistance Value
183.6Ω±8% (20℃)
(Brand: Weiling)
206Ω±8% (20℃)
(Brand: Weiling)
Normal
resistance
value
∞
(Several MΩ)
RPG28H
180Ω±8% (20℃)
(Brand: Wolong)
190Ω±8% (20℃)
(Brand: Wolong)