38MHRC: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
53
DIAGNOSIS AND SOLUTION (CONT)
IPM Continuity Check
Turn the power off, let the large capacity electrolytic capacitors discharge completely, then dismount the IPM. Use a digital tester to measure the
resistance between P and UVWN; UVW and N.
Table 20 — IPM Continuity Check
Fan Motor
Measure the resistance value of each winding by using the tester.
Table 21 — Fan Motor
Digital Tester Normal Resistance Value Digital Tester Normal Resistance Value
(+)Red (-)Black
∞
(Several MΩ)
(+)Red (-)Black
∞
(Several MΩ)P
NU
N
UV
VW
W(+)Red
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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