Troubleshooting - Mitsubishi Electric Mr.SLIM PLA Series Technical & Service Manual

TROUBLESHOOTING

9
HOW TO CHECK THE PARTS
PLA-P3AA
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)
Vane motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
Fan motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
Relay connector
1
Red 1
Relay connector
White
2
2
3
Black
3
Protector
OPEN :130:
CLOSE :80i20:
Drain pump
Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:)
Red
1
2
Red
Drain sensor
Measure the resistance between the terminals using a tester.
Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature 0:~60:)
1
2
3
Normal Abnormal
4.3k"~9.6k" Open or short
Normal Abnormal
15k" Open or short
Motor terminal
or
Red-Black
White-Black
Normal Abnormal
290" Open or short
Normal Abnormal
0.6k"~6.0k" Open or short
Check points
(Refer to the thermistor)
Normal
PLA-P3AA
87.2"
104.1"
(Refer to the thermistor)
20
Abnormal
Open or short