Mitsubishi PKA-RP35GAL - How to Check the Parts

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1
3
2
2
3
1
Red
White
Black
Relay connector
Protector
OFF:125i5:
ON :79i15:
4
5
2
361
Orange
Red
Pink
Yellow Brown Blue
M
Parts name Check points
Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
Fan motor
160"
Measure the resistance between the terminals using a tester.
Contactor
(for heater)
(Only PKH)
Abnormal
Open or short
61
88H
Normal
Abnormal
Open or short
Red–Black
White–Black
Motor terminal
or
Relay connector
120.5"
111.3"
Normal
Open or short
Abnormal
Brown–Yellow
Brown–Blue
Red–Orange
Red–Pink
Connector
Normal
186~214"
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:~30:)
Vane motor
Measure the resistance of each heater element by using a tester.
Heater
(Only PKH)
Normal
Abnormal
72"
800W 240V
Open or short
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 10:~30:)
(Refer to <Thermistor Characteristic graph>
for a detail.)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor (TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Normal
4.3k"~9.6k"
Abnormal
Open or short
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (:)
Resistance (k")
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R0=15kΩ ±3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480( ) }
0: 15kΩ
10: 9.6kΩ
20: 6.3kΩ
25: 5.4kΩ
30: 4.3kΩ
40: 3.0kΩ
Thermistor for
lower temperature
1
273+t
1
273
9-6. HOW TO CHECK THE PARTS
PKH-P35GALH, PKH-P50GALH
PKA-RP35GAL, PKA-RP50GAL
OC330--1.qxp 05.5.9 1:30 PM Page 26