Mitsubishi Electronics MXZ-24UV User Manual download pdf (Page 27)

Part name Check method and criterion

Measure the resistance using a tester.

(Part temperature -10°C ~ 40°C)

Defrost thermistor

Evaporation / Gas pipe

temperature thermistor

Normal abnormal

5kΩ ~ 55kΩ Opened or short-circuited

Measure the resistance using a tester, after warming up the thermistor by holding by hand.

(Part temperature : 20°C ~40°C)

Discharge temperature

thermistor

Normal abnormal

100kΩ ~ 250kΩ Opened or short-circuited

Measure the resistance between terminals using a tester.

(Winding temperature : -10°C ~ 40°C)

Compressor

Measure the resistance between lead wires using a tester.

(Part temperature : -10°C ~ 40°C)

Outdoor fan motor

Normal

WHT - BLK

BLK - YLW

YLW - BLU

Opened or

short-circuited

(Not including

WHT - ORN)

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

R. V. coil

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

Linear expansion valve

Lead wire color Normal

WHT - RED

RED - ORN

YLW - BRN

BRN - BLU

Abnormal

Opened or short-circuited

Measure the resistance using a tester.

(Part temperature -10°C ~ 40°C)

High pressure switch

(HPS)

Pressure Normal abnormal

Operation OFF

HPS1 2.35 ± 0.15MPa (24 ± 1.5kg / cm

)

HPS2 2.55 ± 0.2MPa (26 ± 2kg / cm

)

HPS1 2.75 MPa (28 kg / cm

)

HPS2 3.43 MPa (35 kg / cm

)

Open

Short

Other than

those list-

ed at left

0.05

0.1

0.15

0.5

1.0

1.5

WHT

RED

BLK

WHT

Protector specification

Short

Open

95I15:

135I5:

BLK

ORN

BLU

RED

YLW

LEV

WHT

RED

YLW

BRN

ORN

BLU

RED - BLK

69.0Ω ~ 86.0Ω

23.0Ω ~ 30.0Ω

10.0Ω ~ 13.0Ω

73.0Ω ~ 91.0Ω

43Ω ~ 52Ω

abnormal

12-4. Trouble criterion of main parts

Normal abnormal

1Each phase 0.53Ω ~ 0.66Ω Opened or short-circuited

Normal abnormal

1640Ω ~ 2310Ω Opened or short-circuited

P Inner protector

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Mitsubishi Electronics MXZ-24UV User Manual Page 27

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