innovair BIN312C2V32, Service Manual

Page: 56 / 58

54
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 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
4: Indoor AC Fan Motor
Measure the resistance value of each winding by using the tester.
Position Resistance Value
RPG13B RPG15A RPG20B RPG28H RPG45B
Black -
Red
530
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
75
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
381
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
183.6
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
112
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
118.5
Ω±8%
(20
℃/68℉
)
(Brand: Broad
Ocean)
White -
Black
315
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
150
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
267
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
206
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
82
Ω±8%
(20
℃/68℉
)
(Brand:
Welling)
78.5
Ω±8%
(20
℃/68℉
)
(Brand: Broad
Ocean)