Troubleshooting - Mitsubishi Electric Mr.Slim PLH-P3AAH Technical & Service Manual

10

TROUBLESHOOTING

HOW TO CHECK THE PARTS
PLH-P3AAH.UK,
PLH-P3AAH .UK, PLH-P4AAH
1
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
White
2
2
3
Black
3
Protector
OFF:130:
ON :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
PLH-P4AAH.UK, PLH-P5AAH.UK, PLH-P6AAH.UK
.UK, PLH-P5AAH
1
Normal
4.3k"~9.6k" Open or short
Normal
15k" Open or short
Motor terminal
or
Relay connector
Red-Black
White-Black
Normal
290" Open or short
Normal
0.6k"~6.0k" Open or short
.UK, PLH-P6AAH
1
Check points
Abnormal
(Refer to the thermistor)
Abnormal
Normal
87.2"
104.1"
Abnormal
Abnormal
(Refer to the thermistor)
47
.UK
1
Abnormal
Open or short