MITSUBISHI ELECTRIC MSH-07NV User Manual
Page 50
50
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
Compressor
Room
temperature
thermistor
10-2-2 Trouble criterion of main parts
Part name
Indoor coil
thermistor
Indoor fan
motor
Motor part
Sensor part
Outdoor fan
motor
Vane motor
Check method and criterion
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
Measure the voltage Power ON.
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
Figure
P
R
C
S
RED
BLK
WHT
MAIN
AUX.
07NV
09NV
Normal
8k
Ω
~ 20k
Ω
Abnormal
Opened or short-circuited
Normal
07NV
3.67~4.50
Ω
5.07~6.20
Ω
2.88~3.52
Ω
1.85~2.28
Ω
3.44~4.21
Ω
1.05~1.30
Ω
2.38~2.91
Ω
09NV
12NV
18NV
0.85~1.04
Ω
1.83~2.23
Ω
24NV
C-R
C-S
Normal
Abnormal
Opened or
short-circuited
18/24NV
280 ~ 303
Ω
176 ~ 192
Ω
240 ~ 261
Ω
WHT-BLK
BLK-RED
BRN-YLW
YLW-GRY
Normal
4.5 ~ 5.5V
Abnormal
Remain 0V or 5V
(When fan revolved one time)
0V
➔
5V
➔
0V
(Approx.)
Normal
Abnormal
Opened or
short-circuited
07/09NV
192~236
Ω
373~458
Ω
–
–
114 ~ 141
Ω
118 ~ 146
Ω
–
–
12NV
102 ~ 126
Ω
97.9 ~ 120
Ω
–
–
18NV
55.3 ~ 67.6
Ω
–
26.6 ~ 32.6
Ω
55.5 ~ 67.8
Ω
24NV
WHT-BLK
BLK-RED
BLK-YLW
YLW-RED
Normal
Abnormal
Opened or short-circuited
07/09/12NV 282 ~ 305
Ω
18/24NV
358 ~ 388
Ω
07/09/12NV
Abnormal
Opened or
short-circuited
ORN WHT
RED
BLK
MAIN
AUX.
P
WHT
RED
BLK
MAIN
AUX.
P
P
C
RED ORN WHT
YLW
BLK
MAIN
AUX.1AUX.2
313 ~ 336
Ω
5.13~6.28
Ω
MSH-07NV-
MSH-09NV-
MSH-12NV-
MSH-18NV-
MSH-24NV-
MSH-07NV-
MSH-09NV-
MSH-12NV-
MSH-18NV-
MSH-24NV-
MSH-18NV-
E3
E2
E2
E2
E2
E2
E1
E1
E1
E1
E1
Vane motor
ORN
BLU
YLW
INNER PROTECTOR
RED
PNK
ROTOR
P
FUSE
WHT
RED
BLK
MAIN
AUX.
12NV
18NV
24NV
Defrost
thermistor
Measure the resistance with a tester.
(Part temperature –10°C ~ 40°C)
Normal
5k
Ω
~ 60k
Ω
Abnormal
Opened or short-circuited
OB207t-2qxp 25/9/97 8:56 PM Page 50