Midea MCH2U-18PHH2 Service Manual page 96

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)
267Ω±8% (20℃) 253Ω±8% (20℃)
(Brand: Weiling)
96
Digital tester
(+)Red (-)Black
U
V
W
(+)Red
Resistance Value
183.6Ω±8% (20℃)
(Brand: Dayang) (Brand: Weiling)
206Ω±8% (20℃)
(Brand: Dayang) (Brand: Weiling)
Normal
resistance
value
∞
N
(Several MΩ)
RPG28H
180Ω±8% (20℃)
(Brand: Wolong)
190Ω±8% (20℃)
(Brand: Wolong)