45
DIAGNOSIS AND SOLUTION (CONT)
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.
Table 21—IPM Continuity Check
Digital Tester Normal Resistance Value Digital Tester Normal Resistance Value
(+)Red (-)Black
∞
(Several MΩ)
(+)Red (-)Black
∞
(Several MΩ)
P
N U
N
U V
V W
W (+)Red
Fan Motor
Measure the resistance value of each winding by using the tester.
Table 22—Fan Motor
Model YKT-32-6-202L YKT-32-6-3L YKT-48-6-206 YKT-63-6-200L
Brand Tongde Welling Welling Welling
Black – Red (Main)
Ω 86 213 152 88.5
Blue –Black (AUX)
Ω 64 156 142 138
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