Mitsubishi Electric PLFY Series Technical & Service Manual page 22

8-2. HOW TO CHECK THE PARTS
PLFY-P15VCM-E3.TH
PLFY-P32VCM-E3.TH
Parts name
Thermistor (TH21)
Disconnect the connector then measure the resistance with a tester.
(Room temperature
(At the ambient temperature 10 to 30:)
detection)
Thermistor (TH22)
(Pipe temperature
detection/ Liqid)
Thermistor (TH23)
(Pipe temperature
detection/ Gas)
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 to 30:)
White
M
Orange
Red
Blue Yellow
Linear expansion
Disconnect the connector then measure the valve resistance with a tester.
valve (LEV)
Blue
Brown
M
Yellow
White
Red
Orange
Drain pump (DP)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 to 30:)
Relay
connector
Yellow
1
3
Yellow
Drain sensor (DS)
Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(At the ambient temperature 0 to 60:)
1
2
3
OCH569
PLFY-P20VCM-E3.TH
PLFY-P40VCM-E3.TH
Normal Abnormal
4.3 to 9.6 k" Open or short
Connector Normal
Red — Yellow
Red — Blue
300"
Red — Orange
Red — White
Normal
White-Red Yellow-Brown Orange-Red
200" i10%
Normal Abnormal
290 " Open or short
Normal Abnormal
0.6 to 6.0k" Open or short
PLFY-P25VCM-E3.TH
Check points
Refer to Thermistor characteristic graph.
Abnormal
Open or short
Abnormal
Blue-Brown
Open or short
Refer to the next page for the details.
22
Refer to the next
page for the details.