Carrier 38MGR Series - COMPONENT TESTING: IPM, 4-WAY VALVE, EXV; IPM, 4-Way Valve, EXV Tests

38MGR-04SM Specifications subject to change without notice. 67
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 37 — IPM Continuity Check
AC Fan Motor
Use the tester to measure the resistance value of each winding.
Fig. 70 — AC Fan Motor
Table 38 — Resistance Value
Use the tester to measure the resistance value of each winding.
Table 39 — Resistance Value
DIGITAL TESTER NORMAL RESISTANCE VALUE DIGITAL TESTER NORMAL RESISTANCE VALUE
(+)Red (-)Black
∞
(Several M
)
(+)Red (-)Black
∞
(Several M)
P
N U
U V N
V W
W (+)Red
POSITION RESISTANCE VALUE
RPG20B RPG28H
Black - Red 381Ω±8% (68
F) 342Ω±8% (68F) 183.6Ω±8% (68F) 180Ω±8% (68F)
White - Black 267Ω±8% (68
F) 253Ω±8% (68F) 206Ω±8% (68F) 190Ω±8% (68F)
POSITION RESISTANCE VALUE
YDK70-6FB YDK180-8GB YSK27-4G YSK68-4B YDK45-6B YSK25-6L YDK53-6FB(B)
Black
- Red
56Ω±8%
(68
F)
24.5Ω±8%
(68F)
317Ω±8%
(68F)
145Ω±8%
(68F)
345Ω±8%
(68F)
627Ω±8%
(68F)
88.5Ω±8%
(68F)
Red
- Yellow
76Ω±8%
(68
F)
19Ω±8%
(68F)
252Ω±8%
(68F)
88Ω±8%
(68F)
150Ω±8%
(68F)
374.3Ω±8%
(68F)
138Ω±8%
(68F)
Yellow
- Blue
76Ω±8%
(68
F)
19Ω±8%
(68F)
252Ω±8%
(68F)
88Ω±8%
(68F)
150Ω±8%
(68F)
374.3Ω±8%
(68F)
138Ω±8%
(68F)