63
Part name
Check method and criterion
Defrost thermistor (RT61)
Fin temperature thermistor (RT64)
MXZ-3C/4C/5C
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger tempera-
ture thermistor (RT68)
Measure the resistance with a tester.
Refer to 11-7. “TEST POINT DIAGRAM AND VOLTAGE” 1. “Outdoor electronic control
P.C. board”, 2. "Outdoor control P.C. board" or 4. “Outdoor Power board" for the chart of
thermistor.
Discharge temperature thermistor
(RT62)
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Refer to 11-7. “TEST POINT DIAGRAM AND VOLTAGE” 1. “Outdoor electronic control
P.C. board” or 2. "Outdoor control P.C. board" for the chart of thermistor.
Compressor
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Normal (Each phase)
MXZ-3C54VA
MXZ-3C68VA
MXZ-4C71VA
MXZ-4C80VA
MXZ-5C100VA
MXZ-6C120VA
0.86 ~ 1.06
0.63 ~ 0.78
1.29 ~ 1.49
0.47 ~ 0.57
Outdoor fan motor
MXZ-3C/4C/5C
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Normal (Each phase)
MXZ-3C/4C/5C
13.4 ~ 16.4
Outdoor fan motor
MXZ-6C
Refer to 11-6. .
R.V. coil
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
Normal (Each phase)
MXZ-3C54VA
MXZ-3C68VA
MXZ-4C71VA
MXZ-4C80VA
MXZ-5C100VA
MXZ-6C120VA
1.26 k ~ 1.62 k
1.2 k ~ 1.56 k
1.26 k ~ 1.62 k
Solenoid coil
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
Normal (Each phase)
MXZ-6C120VA
1.17 k ~ 1.43 k
Linear expansion valve
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
Color of lead wire
Normal
WHT - RED
37.4 ~ 53.9
RED - ORN
YLW - RED
RED - BLU
High pressure switch (HPS)
MXZ-3C68/4C/5C/6C
Pressure
Normal
HPS
3.7 0.3 MPa
Close
4.8 0.2 MPa
Open
W
U
V
WHT
RED
BLK
LEV
WHT
RED
YLW
ORN
BLU
U
RED
WHT
BLK
V
W
(W)
(V)
(U)
11-5. TROUBLE CRITERION OF MAIN PARTS
MXZ-3C54VA MXZ-3C68VA MXZ-4C71VA MXZ-4C80VA MXZ-5C100VA MXZ-6C120VA
Summary of Contents for MXZ-3C54VA
Page 16: ...16 WIRING DIAGRAM 6 MXZ 3C54VA ...
Page 17: ...17 MXZ 3C68VA ...
Page 18: ...18 MXZ 4C71VA ...
Page 19: ...19 MXZ 4C80VA ...
Page 20: ...20 MXZ 5C100VA ...
Page 21: ...21 MXZ 6C120VA ...