95
Part name
Check method and criterion
Defrost thermistor (RT61)
Fin temperature thermistor (RT64)
Ambient temperature thermistor
(RT65)
Outdoor heat exchanger
temperature
thermistor (RT68)
Measure the resistance with a tester.
Refer to 11-7. "TEST POINT DIAGRAM AND VOLTAGE" 1. "Inverter P.C. board", 2.
"Outdoor control P.C. board " or 3. "Outdoor power P.C. board" for the chart of thermis-
tor.
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. "Inverter P.C. board", 2.
"Outdoor control P.C. board ", for the chart of thermistor.
Compressor
Measure the resistance between terminals with a tester.
(Winding temperature : -10 °C ~ 40 °C)
Normal (Each phase)
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA
MXZ-2D53VAH
MXZ-3D54VA
MXZ-3D54VA2
MXZ-3D68VA
MXZ-4D72VA
MXZ-4D83VA
MXZ-5D102VA
1.49 ~ 1.84
0.86 ~ 1.06
0.63 ~ 0.78
1.29 ~ 1.49
Outdoor fan motor
MXZ-2D33VA/40VA/42VA/53VA
MXZ-2D53VAH
MXZ-4D83VA/5D102VA
Measure the resistance between lead wires with a tester.
(Part temperature : -10 °C ~ 40 °C)
Normal (Each phase)
MXZ-2D
MXZ-4D83VA
MXZ-5D102VA
12 ~ 16
13.4 ~ 16.4
Outdoor fan motor
MXZ-3D54VA/3D54VA2/3D68VA/4D72VA
Refer to 11-6. .
R.V. coil
Measure the resistance with a tester. (Part temperature : -10 °C ~ 40 °C)
Normal
MXZ-2D33VA
MXZ-2D40VA
MXZ-2D42VA
MXZ-2D53VA
MXZ-2D53VAH
MXZ-4D83VA
MXZ-5D102VA
MXZ-3D54VA
MXZ-3D54VA2
MXZ-3D68VA
MXZ-4D72VA
1.2 k ~ 1.56 k
1.26 k ~ 1.62 k
Linear expansion valve
Measure the resistance with 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-3D68VA/4D72VA
MXZ-4D83VA/5D102VA
Pressure
Normal
HPS
3.7 0.3 MPa
Close
4.8 0.2 MPa
Open
Defrost heater
MXZ-2D53VAH
Measure the resistance with a tester. (Part temperature : -10 °C ~ 40 °C)
Normal
349 ~ 428
W
U
V
WHT
RED
BLK
LEV
WHT
RED
YLW
ORN
BLU
11-5. TROUBLE CRITERION OF MAIN PARTS
MXZ-2D33VA MXZ-2D40VA MXZ-2D42VA MXZ-2D53VA MXZ-2D53VAH
MXZ-3D54VA MXZ-3D54VA2
MXZ-3D68VA MXZ-4D72VA MXZ-4D83VA MXZ-5D102VA
2
3
W
U
V
1
WHT
RED BLK
OBH626E
Summary of Contents for SEZ-KD VA Series
Page 22: ...22 MXZ 2D33VA E2 MXZ 2D42VA E2 MXZ 2D53VA E2 OBH626E ...
Page 23: ...23 MXZ 2D33VA ER2 MXZ 2D40VA ER2 MXZ 2D53VA ER2 OBH626E ...
Page 24: ...24 MXZ 2D53VAH E1 OUTDOOR DISPLAY P C BOARD OBH626E ...
Page 25: ...25 MXZ 2D53VAH E2 OBH626E ...
Page 26: ...26 MXZ 2D53VAH ER2 OBH626E ...
Page 27: ...27 MXZ 3D54VA E1 OBH626E ...
Page 28: ...28 MXZ 3D54VA2 E2 OBH626E ...
Page 29: ...29 MXZ 3D54VA2 ER2 OBH626E ...
Page 30: ...30 MXZ 3D68VA E1 OBH626E ...
Page 31: ...31 MXZ 3D68VA E2 OBH626E ...
Page 32: ...32 MXZ 3D68VA ER2 OBH626E ...
Page 33: ...33 MXZ 4D72VA E1 OBH626E ...
Page 34: ...34 MXZ 4D72VA E2 OBH626E ...
Page 35: ...35 MXZ 4D72VA ER2 OBH626E ...
Page 36: ...36 MXZ 4D83VA E1 OBH626E ...
Page 37: ...37 MXZ 4D83VA E2 OBH626E ...
Page 38: ...38 MXZ 4D83VA ER1 OBH626E ...
Page 39: ...39 MXZ 4D83VA ER2 OBH626E ...
Page 40: ...40 MXZ 5D102VA E1 OBH626E ...
Page 41: ...41 MXZ 5D102VA E2 OBH626E ...
Page 42: ...42 MXZ 5D102VA ER1 OBH626E ...
Page 43: ...43 MXZ 5D102VA ER2 OBH626E ...