Trouble Criterion Of Main Parts - Mitsubishi Electric MSZ-G09SV Service Manual

2. Trouble criterion of main parts

MSZ-G09SV - MSZ-G12SV -
E1
MSZ-G09SV - MSZ-G12SV -
E2
Part name
Room temperature
thermistor(RT11)
Indoor coil thermistor
(RT12(main), RT13(sub))
Defrost thermistor
(RT61)
Discharge temperature
thermistor(RT62)
Fin temperature
thermistor(RT64)
Compressor(MC)
Indoor fan motor(MF)
INNER FUSE
136i 3: CUT OFF
Outdoor fan motor(MF61)
INNER
PROTECTOR
135i 5: OPEN
95i 15: CLOSE
Horizontal vane
motor(MV1)
Vertical vane
motor(MV2)
R.V. coil(21S4)
LEV(Expansion valve)
MUZ-G09SV -
E1
MUZ-G09SV -
E2
Check method and criterion
Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C)
Normal
8 k" ~ 20 k"
Measure the resistance with a tester. (Part temperature –10˚C ~ 40˚C)
Normal
5 k" ~ 55 k"
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
150 k" ~ 600 k"
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Normal
30 k" ~ 180 k"
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
MUZ-G09SV
U-V
1.88 " ~ 2.31"
U-W
V-W
Measure the resistance between the terminals with a tester.
(Part temperature 10˚C ~ 30˚C)
Color of lead wire
WHT – BLK
BLK – RED
Measure the voltage power ON.
Color of lead wire
BRN – YLW
(When fan revolved one time)
YLW – GRY
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Color of lead wire
MUZ-G09SV
WHT – BLK 246 " ~ 301"
BLK – RED 174 " ~ 214 "
Measure the resistance between the terminals with a tester.
(Part temperature 10°C ~ 30°C)
Normal
Color of lead wire
BRN-other one
282 " ~ 306 "
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Normal
2.6 k" ~ 3.3 k"
Measure the resistance with a tester.
(Part temperature : –10˚C ~ 40˚C)
Color of lead wire
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
MUZ-G12SV -
E1
MUZ-G12SV -
E2
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Normal
MUZ-G12SV
0.39 " ~ 0.49 "
Normal
280 " ~ 304 "
312 " ~ 338 "
Normal
4.5 ~ 5.5V
0V 5V 0V
(Approx.)
Normal
MSZ-G12SV
177 " ~ 217 "
308 " ~ 378 "
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Normal
39 " ~ 56 "
74
E1
E2
Abnormal
Open or
short-circuit
Abnormal
Open or
short-circuit
Abnormal
Remain 0V or 5V
Abnormal
Open or
short-circuit
Abnormal
Open or
short-circuit
P : INNER PROTECTOR
Figure
WHT
RED BLK
2 3
1
W
V
U
MAIN
AUX.
FUSE
P
BLK
RED
WHT
RED
ROTOR
YLW
BRN
ORN GRN
6
WHT
1
RED LEV
4
ORN