COMFORT-AIRE B-SVH24SA-1 Service Manual page 55

Service Manual - SVH 09/12/18/24 Series
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. Fan Motor
Measure the resistance value of each winding by using the tester.
Model
Brand
Black – Red
Main
Blue –Black
AUX
Normal resistance value
∞
(Several MΩ)
YKT-32-6-202L YKT-32-6-3L
Tongde
Ω 86
Ω 64
Digital tester
(+)Red (-)Black
U
V
N
W
(+)Red
YKT-48-6-206
Welling Welling
213 152
156 142
55
Normal resistance value
∞
(Several MΩ)
YKT-63-6-200L
Welling
88.5
138