Service manual

32
11-5. Trouble criterion of main parts
Part name FigureCheck method and criterion
Outdoor fan motor(MF)
INNER FUSE
(Only MUZ-GA25VA/H)
152i : CUT OFF
0
5
R.V. coil(21S4)
Expansion valve coil(LEV)
MUZ-GA35VA
MUZ-GA35VAH
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
WHT – BLK
BLK – RED
RED – WHT
Abnormal
Open or
short-circuit
Normal
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Normal
1.26 k" ~ 1.62 k" 1.20 k" ~ 1.55 k"
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Abnormal
Open or
short-circuit
Abnormal
Open or
short-circuit
Normal
38 " ~ 50 "
Measure the resistance with a tester.
(Part temperature : –20˚C ~ 40˚C)
Measure the resistance with a tester. (Part temperature –10˚C ~ 40˚C)
Color of the lead wire
Color of the lead wire
Discharge temperature
thermistor(RT62)
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"
30 k" ~ 180 k"
Abnormal
Open or short-circuit
Normal
5 k" ~ 55 k"
Abnormal
Open or short-circuit
Defrost thermistor
(RT61)
Fin temperature
thermistor(RT64)
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 Abnormal
Open or short-circuit
Ambient temperature
thermistor(RT65)
292 " ~ 374 "
236 " ~ 304 "
31 " ~ 41 "
31 " ~ 41 "
31 " ~ 41 "
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Compressor(MC)
Defrost heater(H)
Measure the resistance with a tester.
(Part temperature -20˚C ~ 40˚C)
Normal
333 " ~ 428 "
Abnormal
Open or short-circuit
Normal
1,220 " ~ 1,580 "
Abnormal
Open or short-circuit
Measure the resistance with a tester.
(Part temperature -20˚C ~ 40˚C)
MUZ-GA25VA
MUZ-GA25VAH
U-V
U-W
V-W
Abnormal
Open or
short-circuit
Normal
1.28 " ~ 1.66 "
1.58 " ~ 2.03"
MUZ-GA35VA
MUZ-GA35VAH
MUZ-GA25VA
MUZ-GA25VAH
MUZ-GA35VA
MUZ-GA35VAH
MUZ-GA25VA
MUZ-GA25VAH
MUZ-GA35VA
MUZ-GA35VAH
MUZ-GA25VA
MUZ-GA25VAH
2 3
W
U
V
1
WHT
RED BLK
2 3
W
U
V
1
WHT
RED BLK
WHT
RED
BLK
FUSE
Solenoid valve coil
(21R1)
MUZ-GA25VA
MUZ-GA25VAH
MUZ-GA35VA
MUZ-GA35VAH
LEV
WHT
6
RED1
ORN4
YLW5
BRN2
BLU3
MUZ-GA25VA - MUZ-GA35VA -
MUZ-GA25VAH - MUZ-GA35VAH -
E1E1
E1E1
OB379 --2qxp 05.1.17 16:38 Page 32