Mitsubishi MSH-18RV - Page 57

57
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
Compressor
(MC)
INNER
PROTECTOR
MUH-18RV
155i 5: ON
90i10: OFF
MUH-24RV
165i 8: ON
102i15: OFF
Room
temperature
thermistor (RT11)
2. Trouble criterion of main parts
Part name
Indoor coil
thermistor (RT12)
Indoor fan
motor (MF)
INNER FUSE
145: CUT OFF
Motor partSensor part
Outdoor fan
motor (MF)
INNER
PROTECTOR
145i 8: ON
( 88i15: OFF
w
)
Vane motor
(MV)
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.
(Part temperature –10°C ~ 40°C)
Measure the voltage Power ON.
Measure the resistance between the terminals with a tester.
(Part temperature –10°C ~ 40°C)
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
Figure
P
~
BLK
R
MAIN
AUX
RED
S
C
WHT
Normal
8kΩ ~ 20kΩ
Abnormal
Open or short-circuit
Terminal
Normal
0.90Ω ~ 1.12Ω
1.79Ω ~ 2.21Ω
C-R
MUH-18RV
0.84Ω ~ 1.04Ω
1.82Ω ~ 2.24Ω
MUH-24RV
C-S
Normal
Abnormal
Open or
short-circuit
176Ω ~ 192Ω
240Ω ~ 261Ω
WHT-BLK
BLK-RED
Color of lead wire
BRN-YLW
YLW-GRY
Normal
4.5 ~ 5.5V
Abnormal
Remain 0V or 5V
(When fan revolved one time)
0V➔5V➔0V
(Approx.)
Color of lead wire
Normal
Abnormal
Open or
short-circuit
97Ω ~ 120Ω
MUH-18RV
102Ω ~ 126Ω
WHT-BLK
BLK-RED
–
BLK-YLW
Normal
Abnormal
Open or short-circuit
358 ~ 388Ω
Abnormal
Open or
short-circuit
MAIN
AUX
BLK
MUH-18RV
MUH-24RV
RED
WHTORN
P
P
C
RED
ORN WHT
YLW
BLK
MAIN
AUX.1 AUX.2
–
YLW-RED
–
MUH-24RV
55Ω ~ 68Ω
26Ω ~ 33Ω
55Ω ~ 68Ω
YLW
RED
BLU
ORN
PNK
ROTOR
:INNER PROTECTOR
P
MAIN
AUX
FUSE
BLK
RED
WHT
GRY
YLW BRN
Defrost
thermistor
(RT61)
Measure the resistance with a tester.
(Part temperature –10°C ~ 40°C)
Normal
5kΩ ~ 60kΩ
Abnormal
Open or short-circuit
Ambient temper-
ature thermistor
(RT63)
MSH-24RV
Measure the resistance with a tester.
(Part temperature –10°C ~ 40°C)
Normal
5kΩ ~ 60kΩ
Abnormal
Open or short-circuit
MSH-18RV - MUH-18RV - MUH-18RV -
MSH-24RV - MUH-24RV -
E1E1
E2E1E1
Color of lead wire
w Reference value
OB272-2.qxp 02.1.26 1:23 PM Page 57