Read LG WM2150HR Service Manual online
22
8-3. TROUBLESHOOTING SUMMARY
Remar
k
Result
(toler
ance
5%)
At 86
℉
(30
℃
)
At 104
℉
(40
℃
)
At 140
℉
(60
℃
)
At 158
℉
(70
℃
)
At 203
℉
(95
℃
)
At 221
℉
(105
℃
)
39.5 k
Ω
26.1 k
Ω
12.1 k
Ω
8.5 k
Ω
3.8 k
Ω
2.8 k
Ω
Thermistor
Pin4:
W
ash
ther
mistor
Motor
Hall Sensor
RD
Pin1:
U
Pin2:
V
Pin3:
W
NA
Pin1:
+
Pin2:
Hb
Pin3:
Ha
Pin4:
GND
Door Switc
h
NA Pin1:
PTC
Pin2:
PTC
Inlet V
alve
NA_
Pin3:
Main w
ash
BL3
BL4
Pin1:
Common
Pin2:
Pre w
ash
Pin3:
Bleach
Pin4:
Hot v
alv
e
Result
T
est P
oints
8~12 k
Ω
8~12 k
Ω
10~15 Vdc
10 Vdc
10 Vdc
Remar
k
V
oltage Input
Pulsing Signal
Pulsing Signal
Pin1 ~ Pin2
Pin1 ~ Pin3
Pin1 ~ Pin4
Pin2 ~ Pin4
Pin3 ~ Pin4
Result
T
est P
oints
700-1500
Ω
60-90
Ω
Infinity
120 V
ac
Remar
k
At 77
℉
(25
℃
)
At 77
℉
(25
℃
)
V
oltage Input
Pin2 ~ Pin4
Pin3 ~ Pin4
Pin4 ~ Pin5
Pin2 ~ Pin4
steam gener
ator
Result
T
est P
oints
0
Ω
0
Ω
WH_Pin1 ~ RD Pin3
WH_Pin3 ~ RD Pin1
Heater:
12 ~18
Pin1 to Pin2:
0.8~1.2
Heater
BK Pin1:
V
ac (input)
Pin2
:
W
ash heater
YL Pin1:
V
ac
Pin2
:
W
ash heater
Ω
Ω
Pump
BL4 Pin1:
Dr
ain pump
1.
Pump r
unning:
120V
5%
2.
Stopped Motor/Pump:
0~1V
10 ~ 20
Ω
Result
T
est P
oints
5~15
Ω
5~15
Ω
5~15
Ω
Pin1 ~ Pin2
Pin2 ~ Pin3
Pin3 ~ Pin1
W
ash thermistor
Pump
Dr
ain pump :
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