Mitsubishi Electric PKA-RP60FAL Service Manual page 26

9-6. HOW TO CHECK THE PARTS
PKH-P60FALH, PKH-P71FALH, PKH-P100FALH
PKA-RP60FAL, PKA-RP71FAL, PKA-RP100FAL
Parts name
Room temperature Disconnect the connector then measure the resistance using a tester.
thermistor (TH1)
(Surrounding temperature 10:~30:)
Pipe temperature
thermistor (TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Measure the resistance between the terminals using a tester.
Fan motor
Relay connector
(Winding temperature 20:)
1
Red
1
White
2
2
3
Black
3
Protector
OFF:130i5:
ON :80i20:
Measure the resistance between the terminals using a tester.
Vane motor
4 (Surrounding temperature 20:~30:)
Orange
M
5
Red
2
Pink
Yellow Brown Blue
3 6 1
Measure the resistance of each heater element by using a tester.
Heater
(Only PKH)
Contactor Measure the resistance between the terminals using a tester.
(for heater)
(Only PKH)
<Thermistor Characteristic graph>
Thermistor for
lower temperature
Thermistor R =15kΩ ± 3%
0
Fixed number of B=3480 ± 2%
Rt=15exp { 3480(
273+t
0: 15kΩ
10: 9.6kΩ
20: 6.3kΩ
25: 5.4kΩ
30: 4.3kΩ
40: 3.0kΩ
Normal
4.3k"~9.6k" Open or short
Motor terminal
or
60, 71
Relay connector
Red–Black
99.5"
White–Black
103.9"
Connector
Brown–Yellow
Brown–Blue
Red–Orange
Red–Pink
Normal
60, 71 100
18.9" 16.5"
700W 240V 800W 240V
Normal
6 1
88H
160"
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
1 1
) }
273
Check points
Abnormal
Normal
100
62.6"
Open or short
74.0"
Normal
186~214"
Open or short
Abnormal
Open or short
Abnormal
Open or short
26
Abnormal
Abnormal
< Thermistor for lower temperature >
50
40
30
20
10
0
-20 -10 0 10 20 30 40 50
Temperature (:)