Troubleshooting; Plfy-P08Ncmu-E.th; Plfy-P08Ncmu-E; Plfy-P08Ncmu-Er2.Th - Mitsubishi Electric City Multi PLFY-P08NCMU-E Technical & Service Manual

10

TROUBLESHOOTING

10-1. HOW TO CHECK THE PARTS

PLFY-P08NCMU-E.TH

PLFY-P08NCMU-E

PLFY-P08NCMU-ER2.TH

Parts name
Thermistor (TH21)
Disconnect the connector then measure the resistance with a tester.
(Room temperature
(At the ambient temperature 50 F~86 F)
detection)
Thermistor (TH22)
(Pipe temperature
detection/ Liquid)
Thermistor (TH23)
(Pipe temperature
detection/ Gas)
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 68 F~86 F)
White
M
Orange
Red
Blue Yellow
Fan motor (MF)
P
BLK YLW BRN RED ORN
BLU
WHT
: Thermal fuse 284°F±36 F
Linear expansion
Disconnect the connector then measure the resistance valve 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 68 F~86 F)
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 32 F~140 F)
1
2
3

PLFY-P12NCMU-E.TH

.TH

PLFY-P12NCMU-E

1

PLFY-P12NCMU-ER2.TH

Normal
4.3k ~9.6k
Connector
Red — Yellow
Red — Blue
Red — Orange
Red — White
Measure the resistance between the terminals with a tester.
(Coil wiring temperature 50 F~86 F)
PLFY-P08NCMU-E
PLFY-P08NCMU-ER2
WHT-BLK
387 ~418
BLK-BLU
77 ~83
BLU-YLW 19 ~21
YLW-RED
179 ~193
RED-BRN
Normal
White-Red Yellow-Brown Orange-Red
200
Normal
290
Normal
0.6k ~6.0k
PLFY-P15NCMU-E.TH
.TH PLFY-P15NCMU-E
1
PLFY-P15NCMU-ER2.TH
Check points
Abnormal
Refer to the next page for the details.
Open or short
Normal Abnormal
300 Open or short
Normal
PLFY-P12NCMU-E
(1)
PLFY-P12NCMU-ER2
303 ~328
105 ~114
39 ~42
235 ~254
Blue-Brown
10%
Abnormal
Open or short
Abnormal
Open or short Refer to the next page for the details.
22
.TH
1
PLFY-P15NCMU-E
(1) (1)
PLFY-P15NCMU-ER2
272 ~295
79 ~85
37 ~40
191 ~206
Abnormal
Refer to the next
page for the details.
Open or short
Abnormal
Opened or
short-circuited