Mitsubishi Electric PKA-RP60KAL Service Manual download pdf (Page 22)

9-6. HOW TO CHECK THE PARTS

PKA-RP60KAL.TH PKA-RP71KAL.TH PKA-RP100KAL.TH

Parts name Check points

Disconnect the connector then measure the resistance using a tester.

(At the ambient temperature 10~30)

Vane motor (MV)

Refer to the thermistor.

Room temperature

thermistor (TH1)

Liquid pipe temperature

thermistor (TH2)

Condenser / Evaporator

temperature thermistor

(TH5)

Normal

4.3k~9.6k

Abnormal

Open or short

Measure the resistance between the terminals using a tester. (Coil temperature 20)

Normal

250 ± 7%

Abnormal

-

Brown-Red

-

Brown-Orange

-

Brown-Yellow

-

Brown-Green

Open or short

Fan motor (MF)



Red



Yellow



Brown

Orange



Green



Connect pin No.

Refer to 9-6-2.

-20-10 0 1020304050

< Thermistor for lower temperature >

Temperature ()

Resistance (k)

Room temperature thermistor(TH1)

Pipe temperature thermistor/liquid(TH2)

Condenser/evaporator temperature

thermistor(TH5)

Thermistor R0=15k' ± 3%

Fixed number of B=3480 ± 2%

Rt=15exp { 3480( ) }

0: 15k'

10: 9.6k'

20: 6.3k'

25: 5.4k'

30: 4.3k'

40: 3.0k'

Thermistor for

lower temperature

273+t

273

9-6-1. Thermistor

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 31 32

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Mitsubishi Electric PKA-RP60KAL Service Manual Page 22

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