Mitsubishi Electric MS-C18TV-E1 WH Service Manual page 31

MS-C18TV - MU-C18TV -
E1
MS-C24TV - MU-C24TV -
E1
2. Trouble criterion of main parts
Part name
Room
Measure the resistance with a tester.
temperature
(Part temperature 10°C ~ 30°C)
thermistor(RT11)
Indoor coil
thermistor(RT12)
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
Compressor
(MC)
C-R
C-S
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
Indoor fan
motor (MF)
Measure the voltage Power ON.
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
Outdoor fan
motor (MF)
WHT-BLK
BLK-RED
BLK-YLW
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
Vane motor
(MV)
E1
E1
Check method and criterion
Normal
8kΩ ~ 20kΩ
Normal
C18TV C24TV
0.95 ~ 1.17Ω 0.59 ~ 0.73Ω
1.92 ~ 2.36Ω 1.78 ~ 2.18Ω
Normal
176 ~ 192Ω
WHT-BLK
BLK-RED 240 ~ 261Ω
Normal
BRN-YLW
4.5 ~ 5.5V
(When fan revolved one time)
YLW-GRY
0V 5V 0V
(Approx.)
Normal
C18TV
102 ~ 126Ω 71 ~ 88Ω
97 ~ 120Ω 90 ~ 111Ω
– 81 ~ 100Ω
Normal
358 ~ 388Ω
Abnormal
Open or short-circuit
Abnormal
Open or
short-circuit
Abnormal
Open or
short-circuit
Abnormal
Remain 0V or 5V
Abnormal
C24TV
Open or
short-circuit
Abnormal
Open or
short-circuit
31
Figure
WHT C
P
~
AUX MAIN
R
S
BLK
RED
MAIN
AUX
FUSE
MS-C18TV
MAIN
AUX
P
BLK RED ORN WHT
MS-C24TV
MAIN
AUX
MAIN
P
YLW BLK RED ORN WHT
PNK
ROTOR
ORN
RED
YLW BLU
INNER PROTECTOR
P