Fisher FS2MIF-140AE2, Service Manual

Page: 61 / 61

60
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.
Posi
tion
Resistance Value
RPG20D(
Weilng)
RPG28D(T
ongDe)
RPG28D(
Dayang)
RPG20E(T
ongDe)
RPG20E(
Weilng)
RPG13H(
Weilng)
RPG25(T
ongDe)
YSK68-4P(
Weilng)
YDK37
-4P
Blac
k -
Red
398Ω±8%
(20
℃
)
255Ω±8%
(20
℃
)
271.3Ω±8
% (20
℃
)
415Ω±8%
(20
℃
)
387Ω±8%
(20
℃
)
575Ω±8%
(20
℃
)
295Ω±8%
(20
℃
)
285.8Ω±8
% (20
℃
)
258.7
Ω±8%
(20
℃
)
Red -
Yello
w
345Ω±8%
(20
℃
)
335Ω±8%
(20
℃
)
347.8Ω±8
% (20
℃
)
396Ω±8%
(20
℃
)
378Ω±8%
(20
℃
)
558Ω±8%
(20
℃
)
420Ω±8%
(20
℃
)
178.5Ω±8
% (20
℃
)
189.7
Ω±8%
(20
℃
)
Yello
w -
Blue
345Ω±8%
(20
℃
)
335Ω±8%
(20
℃
)
347.8Ω±8
% (20
℃
)
396Ω±8%
(20
℃
)
378Ω±8%
(20
℃
)
558Ω±8%
(20
℃
)
420Ω±8%
(20
℃
)
178.5Ω±8
% (20
℃
)
189.7
Ω±8%
(20
℃
)