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Heat Controller, Inc. VMH SerieS Service Manual
2. Fan Motor.
Measure the resistance value of each winding by using the tester.
Position Resistance Value
YDK70-6FB YDK180-8GB YSK27-4G YSK68-4B YDK45-6B YSK25-6L
Black - Red
56Ω±8%
(20℃)
24.5Ω±8%
(20℃)
317Ω±8%
(20℃)
145Ω±8%
(20℃)
345Ω±8%
(20℃)
627Ω±8%
(20℃)
Red - Yellow
76Ω±8%
(20℃)
19Ω±8%
(20℃)
252Ω±8%
(20℃)
88Ω±8%
(20℃)
150Ω±8%
(20℃)
374.3Ω±8%
(20℃)
Yellow - Blue
76Ω±8%
(20℃)
19Ω±8%
(20℃)
252Ω±8%
(20℃)
88Ω±8%
(20℃)
150Ω±8%
(20℃)
374.3Ω±8%
(20℃)
Measure the resistance value of each winding by using the tester
Position Resistance Value
RPG20B RPG28H
Black - Red
381Ω±8% (20℃) 183.6Ω±8% (20℃)
White - Black
267Ω±8% (20℃) 206Ω±8% (20℃)