Mitsubishi Electric MXZ-2HA40VF-E1 Service Manual page 50

12-5. TROUBLE CRITERION OF MAIN PARTS
MXZ-2HA40VF MXZ-2HA50VF MXZ-3HA50VF
Part name
Defrost thermistor (RT61)
Fin temperature thermistor (RT64)
Ambient temperature thermistor (RT65)
Outdoor heat exchanger
temperature thermistor (RT68)
Discharge temperature thermistor
(RT62)
Compressor
W
RED
V
U
WHT
BLK
Outdoor fan motor
WHT RED BLK
2 3
1
W
V
U
MXZ-2HA40VF/2HA50VF
Outdoor fan motor
MXZ-3HA50VF
R.V. coil
Linear expansion valve
WHT
LEV
RED
ORN
YLW
BLU
High pressure switch (HPS)
MXZ-3HA50VF
OBH828B
Measure the resistance with a tester.
Refer to 12-7. "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.
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Refer to 12-7. "TEST POINT DIAGRAM AND VOLTAGE" 1. "Inverter P.C. board", 2.
"Outdoor control P.C. board ", for the chart of thermistor.
Measure the resistance between terminals with a tester.
(Winding temperature : -10°C - 40°C)
Normal (Each phase)
0.86 - 1.06
Measure the resistance between lead wires with a tester.
(Part temperature : -10°C - 40°C)
Normal (Each phase)
32 - 43
Refer to 12-6. .
Measure the resistance with a tester. (Part temperature : -10°C - 40°C)
Normal
MXZ-2HA40VF
MXZ-3HA50VF
MXZ-2HA50VF
1.2 k - 1.56 k 1.26 k - 1.62 k
Measure the resistance with a tester. (Part temperature : -10°C - 40°C)
Color of lead wire
WHT - RED
RED - ORN
YLW - RED
RED - BLU
Pressure
3.43 ± 0.15 MPa
HPS
4.14 ± 0.1 MPa
50
Check method and criterion
Normal
37.4 - 53.9
Normal
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