Trouble Criterion Of Main Parts - Mitsubishi Electric Mr. Slim MSH09NW Service Manual

MSH09NW, MSH12NN, MSH15NN, MSH17NN

11-2-2 Trouble criterion of main parts

Part name
Room
Measure the resistance with a tester.
temperature
(Part temperature 50°F ~ 86°F)
thermistor
Indoor coil
thermistor
Measure the resistance with a tester.
(Part temperature 14°F ~ 104°F)
Defrost
thermistor
Measure the resistance between the terminals with a tester.
(Coil wiring temperature14°F ~ 104°F)
Compressor
Measure the resistance between the terminals with a tester.
(Coil wiring temperature 50°F ~ 86°F)
Measure the voltage Power ON.
Indoor fan
motor
Measure the resistance between the terminals with a tester.
(Coil wiring temperature14°F ~ 104°F)
Outdoor fan
motor
Measure the resistance between the terminals with a tester.
(Part temperature 50°F ~ 86°F)
Vane motor
46
Check method and criterion
Normal
8kΩ ~ 20kΩ
Normal
5kΩ ~ 55kΩ
Normal
09NW 12NN
C-R
0.86~1.06Ω 1.9~2.4Ω
C-S
1.9~2.4Ω 2.7~3.4Ω
WHT-BLK
BLK-RED
Normal
09NW
BRN-YLW
4.5 ~ 5.5V
(When fan revolved one time)
YLW-GRY
0V 5V 0V (Approx.)
12/15NN
Ω
WHT-BLK
67~73
Ω
BLK-YLW
9~9.8
Ω
YLW-BLU
4.9~5.5
BLU-BRN 5.8~6.4Ω
Ω
BRN-RED
28~32
09NW
Ω
WHT-BLK
42~53
Ω
BLK-RED
74~92
Normal
09NW
12/15/17NN
282 ~ 305Ω 358 ~ 387Ω
Abnormal
Opened or short-circuited
Abnormal
Opened or short-circuited
15NN 17NN
1.4~1.9Ω 1.4~1.8Ω
2.4~3.0Ω 2.3~2.9Ω
Normal
09NW
76~83 Ω
70~76 Ω
Abnormal
Remain 0V or 5V
Normal
17NN
Ω
53~59
Ω
10~12
Ω
4.6~5.0
5.4~6.0Ω
Ω
36~40
Normal
12/15NN 17NN
Ω Ω
102~126 55~68
Ω Ω
97~120 82~101
Abnormal
Opened or short-circuited
Abnormal
Opened or
short-circuited
Abnormal
09NW
Opened or
short-circuited
Abnormal
12/15/17 NN
YLW
BLU
Opened or
BRN
short-circuited
09NW
RED
Abnormal
12/15/17 NN
Opened or
RED
short-circuited
ORN
Figure
WHITE
1
RED
2
BLK
3
YLW
1
GRY
2
BRN
3
BLK
F
RED
WHT
ORN
BLK
P
WHT
BLK
P
WHT