Mitsubishi MXZ-2A52VA Service Manual download pdf (Page 62)

Normal

MXZ-2A40/52

0.56Ω ~ 0.69Ω

Discharge temperature

thermistor (RT62)

Fin temperature

thermistor (RT64)

WHT - RED

RED - ORN

Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)

37.4Ω ~ 53.9Ω

Part name Check method and criterion

Measure the resistance between terminals using a tester.

(Winding temperature : -10°C ~ 40°C)

Compressor

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

BRN

ORN

BLU

Color of lead wire

Normal

YLW - BRN

BRN - BLU

RED

WHT

BLK

(W)

(V)

(U)

Normal (1 Each phase)

13.4Ω ~ 16.4Ω

Pressure Normal

HPS

3.7 ± 0.15MPa

4.8 MPa

Open

0.05

0.1

High pressure switch

(HPS)

MXZ-4A80

Normal (1Each phase)

MXZ-4A80

MXZ-3A54/4A71

1.29Ω ~ 1.49Ω

0.39Ω ~ 0.49Ω

13-5. Trouble criterion of main parts

MXZ-2A40VA MXZ-2A52VA MXZ-3A54VA MXZ-4A71VA MXZ-4A80VA

1.2kΩ ~ 1.56kΩ

MXZ-3A/4A

12Ω ~ 16Ω

MXZ-2A

Defrost thermistor

(RT61)

Ambient temperature

thermistor (RT65)

Outdoor heat exchanger

temperature thermistor

(RT68)

Gas pipe temperature

thermistor (RT6A~D)

Measure the resistance with a tester.

Refer to 13-7. “Test point diagram and voltage”,1. “Inverter P.C. board” or 2.

“Outdoor electronic control P.C. board”, the chart of thermistor.

Measure the resistance with a tester.

Before measurement, hold the thermistor with your hands to warm it up.

Refer to 13-7. “Test point diagram and voltage”,1. “Inverter P.C.board” or 2. “Outdoor

electronic control P.C. board”, the chart of thermistor.

2 3

WHT

RED BLK

MXZ-3A/4AMXZ-2A

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Mitsubishi MXZ-2A52VA Service Manual Page 62

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