74
Defrost thermistor (RT61)
Fin temperature thermistor (RT64)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger temperature
thermistor (RT68)
Discharge temperature
thermistor (RT62)
WHT - RED
RED - ORN
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
37.4 ~ 53.9
Part name
Check method and criterion
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Compressor
W
U
V
WHT
RED
BLK
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Outdoor fan motor
R.V. coil
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
Linear expansion valve
LEV
WHT
RED
YLW
ORN
BLU
Color of lead wire
Normal
YLW - RED
RED - BLU
U
RED
WHT
BLK
V
W
(W)
(V)
(U)
High pressure switch (HPS)
MXZ-3B68/4B71/4B80/5B100VA
Pressure
Normal
HPS
3.7 0.15 MPa
4.8 MPa
Open
Close
+ 0.05
- 0.1
11-5. TROUBLE CRITERION OF MAIN PARTS
Measure the resistance with a tester.
Refer to 11-7. “Test point diagram and voltage”, 1. “Inverter P.C. board,” 2. “Outdoor
electronic control P.C. board,” or 5. “Outdoor Power board”, for the chart of thermis-
tor.
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”, for the chart of thermistor.
Normal (Each phase)
1.29 ~ 1.49
Normal (Each phase)
1.2 k ~ 1.56 k
0.63 ~ 0.78
0.86 ~ 1.06
MXZ-3B54VA
MXZ-3B68VA
MXZ-4B71VA
MXZ-4B80VA
MXZ-5B100VA
1.26 k ~ 1.62 k
Other models
MXZ-3B68VA
MXZ-4B71VA
MXZ-3B54VA
MXZ-2B30VA MXZ-2B40VA MXZ-2B52VA MXZ-3B54VA MXZ-3B68VA MXZ-4B71VA
MXZ-4B80VA MXZ-5B100VA
MXZ-2B52VA
MXZ-2B30VA
MXZ-2B40VA
1.49 ~ 1.84
2
3
W
U
V
1
WHT
RED BLK
MXZ-2B
MXZ-3B/4B/5B
Normal (Each phase)
13.4 ~ 16.4
MXZ-3B/4B/5B
12 ~ 16
MXZ-2B
OBH554D
Содержание MXZ-2B30VA
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Страница 20: ...20 MXZ 3B54VA OBH554D ...
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Страница 22: ...22 MXZ 4B71VA OBH554D ...
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