Mitsubishi Electronics PDFY-P36NMU-E, PDFY-P30NMU-E Trouble Shooting, How to check the parts

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TROUBLE SHOOTING

7-1. How to check the parts

Parts name

Check points

Room temparature

Disconnect the connector, then measure the resistance using a

tester.

thermistor

(TH21)

(Sorrounding temperature 10˚C~30˚C[50˚F~86˚F])

Liquid pipe thermistor

(TH22)

Normal

Abnormal

Gas pipe thermistor

(Refer to the thermistor)

(TH23)

Ω

~9.6k

Ω

Open or short

4.3k

Transformer

Disconnect the connector and measure the resistance using a tester.

CNT

T

CN3T

Normal

Abnormal

1 Red

Blue

1

CNT(1)-(3)

App.45Ω

Open or short

2

2

CN3T(1)-(3)

App.1Ω

3

Blue

3

White

Linear expansion

Disconnect the connector then measure the resistance valve using a tester.

valve

CN60

Refer to the next page for a detail.

White

1

Normal

Abnormal

Yellow

2

Orange

(1)-(5)

(2)-(6)

(3)-(5)

(4)-(6)

3

LEV

Blue

White-Red

Yellow-Blown

Orange-Red

Blue-Brown

Open or short

4

Red

5

150Ω ±10%

Brown

6

Fan motor

Measure the resistance between the terminals using a tester.

(at 20˚C[68˚F])

PDFY

Relay connector

Motor terminal

Normal

P06~30NMU-E

1 Orange

1

or

Abnormal

2

Black

Relay connector

10,16

24~32

2

Orange-Gray

43.1Ω

40.5Ω

Open or short

4

Gray

4

Brack-Gray

53.6Ω

48.8Ω

Protector

PDFY

Relay connector

Measure the resistance between the terminals using a tester.

(at 20˚C[68˚F])

P36·48NMU-E

Orange

4

Motor terminal

Normal

Black

or

Abnormal

Blue

4

4

Relay connector

40

48

2

2

Gray-Orange

23.5Ω

16.45Ω

Yellow

Red

Yellow

Orange-Black

4.79Ω

8.30Ω

Yellow

1

C

Gray

Black-Blue

6.78Ω

1.454Ω

Open or short

Gray

1

White

Gray

Blue-Yellow

13.77Ω

7.94Ω

Protector

Yellow-Red

29.8Ω

21.9Ω

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