Mitsubishi Electric MSC-07RV Service Manual page 131

MXZ-18RV - MXZ-32RV -
E1
Part name
Defrost thermistor
Suction / Evaporation /
Gas pipe temperature ther-
mistor
Discharge temperature
thermistor
Compressor
W
RED
V
U
WHT
BLK
Outdoor fan motor
WHT WHT
P
ORN
P
ORN
RED
RED
BLU
YLW
YLW
BLK
BLK
MXZ-18NV MXZ-32NV
Reversing valve coil
<Only MXZ-32RV>
Solenoid coil
Linear expansion valve
YLW
BLU
WHT
ORN
RED
High pressure switch
(HPS)
Low pressure switch (LPS)
Compressor thermistor
Only MXZ-32RV
E1
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
Normal
5kΩ ~ 55kΩ
Measure the resistance using a tester, after warming up the thermistor by holding by hand.
(Part temperature : 20°C ~40°C)
Normal
100kΩ ~ 250kΩ
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
MXZ-18RV
Each phase 1.05Ω ~ 1.29Ω
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
WHT - BLK MXZ-18RV
WHT - BLK 143.0Ω ~ 176.0Ω
BLK - YLW 63.0Ω ~ 78.0Ω
YLW - BLU
RED - BLK
YLW - RED 31.0Ω ~ 39.0Ω
Measure the resistance using a tester. (Part temperature -10°C ~ 40°C)
MXZ-18RV
1320Ω ~ 1620Ω
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
Normal
873Ω ~ 1068Ω
Measure the resistance using a tester.(Part temperature -10°C ~ 40°C)
Lead wire color
WHT - RED
RED - ORN
YLW - RED
RED - BLU
Measure the resistance using a tester.
(Part temperature -10°C ~ 40°C)
Pressure (HPS, LPS)
Operation OFF
HPS1 2.35 ± 0.15MPa (24 ± 1.5kg / cm
HPS2 2.55 ± 0.2MPa (26 ± 2kg / cm
LPS
0.15 ± 0.05MPa (1.5 ± 0.5kg / cm
+
HPS1 2.75
0.05
-
0.1
+
HPS2 3.43 0
- 0.15
LPS
0.05 ± 0.04MPa (0.5 ± 0.4kg / cm
Check method and criterion
Normal
MXZ-32RV
Each phase 0.47Ω ~ 0.58Ω
Normal
MXZ-32RV
69.0Ω ~ 86.0Ω
23.0Ω ~ 30.0Ω
- 10.0Ω ~ 13.0Ω
- 73.0Ω ~ 91.0Ω
Normal
MXZ-32RV
1190Ω ~ 1715Ω
Normal
MXZ-18RV MXZ-32RV
22 ~ 29Ω
21 ~ 26Ω
2
)
2
)
2
)
+
2
MPa (28 0.5 kg / cm )
- 1.0
+
2
MPa (35 0 kg / cm )
- 1.5
2
)
131
abnormal
Opened or short-circuited
abnormal
Opened or short-circuited
abnormal
Opened or
short-circuited
abnormal
Opened or
short-circuited
(Not including
WHT - ORN)
-
abnormal
Opened or
short-circuited
abnormal
Opened or short-circuited
Abnormal
Opened or short-circuited
Inner thermistor Normal
Operation OFF
Short
108 ± 11°C
130 ± 5°C Open
abnormal
Other than
those list-
ed at left