LG F1407TDP9 Service Manual ▷ View online
21
NO
NO
NO
Y E S
Y E S
Y E S
Y E S
M
A
X
ma x
Y E S
Y E S
NO
Fix the bolt tightly.
R eplace the S TATOR
assembly
assembly.
assembly
assembly.
or R OTOR
Is the motor bolt loosened?
Is there friction noise from the motor?
A B NOR MA L S OUND
S OF T E NE R DOE S NOT F L OW IN
R efer to
^ NO WAT E R S UP P LY _
C heck the wiring on the
dispenser.
dispenser.
P ut it in the correct
compartment.
compartment.
C lean the cap and
drawer.
drawer.
Is water supplied?
Are receptacles correctly connected to the
terminals of inlet valve?
terminals of inlet valve?
Is softener put in the correct compartment of
drawer?
drawer?
Is the softner cap clogged?
22
HE AT ING WIT HOUT WA T E R
When pressing Temp. and Rinse at
the same time after draining, is the water
level frequency 248~262 or more?
When pressing Rinse and Temp. buttons
at the same time while wash, is the water
level frequency between 230 - 243?
the same time after draining, is the water
level frequency 248~262 or more?
When pressing Rinse and Temp. buttons
at the same time while wash, is the water
level frequency between 230 - 243?
Checking voltage between two pins
(Connector RD & YL )as press
the POWER button is the voltage
220-240V~?
220-240V~?
Replace the
S.PRESSURE
SWITCH ASSEMBLY.
S.PRESSURE
SWITCH ASSEMBLY.
Replace the MAIN
PWB ASSEMBLY.
PWB ASSEMBLY.
Y E S
Y E S
NO
DR A IN MA L F UNC T IONING
Is the drain hose twisted or frozen?
Repair the DRAIN
HOSE ASSEMBLY.
HOSE ASSEMBLY.
NO
Y E S
Is the impeller of the drain pump clogged?
Remove foreign
material.
material.
NO
Y E S
Is the connector disconnected,
disassembled?
disassembled?
Is the coil of the drain pump cut-off?
(resistance of coil is 80~150
(resistance of coil is 80~150
)
When checking voltage between
connectors ( , )on spinning, is the
voltage 220-240V~ as the figure?
Repair the DRAIN
PUMP ASSEMBLY.
PUMP ASSEMBLY.
Repair the MAIN PWB
ASSEMBLY.
ASSEMBLY.
Reconnect or repair the
connector.
connector.
NO
NO
Y E S
NO
Y E S
AC 220V~240V
<PWB ASSEMBLY >
1
1
23
WA S H HE A T E R T R OUB L E
When checking the voltage between
connector during whites washing. is
the voltage 220-240V~?
connector during whites washing. is
the voltage 220-240V~?
After power off, is the resistance of
wire (BN-BL) connectores between
10
wire (BN-BL) connectores between
10
~ 30 ?
After power off and the heater terminal
is disconnected, is the resistance
10
is disconnected, is the resistance
10
~ 30 ?
Replace the MAIN
PWB ASSEMBLY.
PWB ASSEMBLY.
Normal
Replace the
HEATER ASSEMBLY.
HEATER ASSEMBLY.
Y E S
NO
NO
Y E S
NO
HE AT ING C ONT INUOUS LY A B OV E
T HE S E T T ING WA T E R T E MP E R A T UR E
When pressing Temp.
button simultaneously during, is the
displayed temperature is over 10
higher than the selected temperature?
(Refer to the 7-2 Q
button simultaneously during, is the
displayed temperature is over 10
higher than the selected temperature?
(Refer to the 7-2 Q
C Test Mode)
Is the resistance between Thermistor
Comectors 2.5k
Comectors 2.5k
~180k ?
Check if inlet hose is
connected to a hot
faucet ; otherwise,
replace PWB
ASSEMBLY (Main).
connected to a hot
faucet ; otherwise,
replace PWB
ASSEMBLY (Main).
Replace
Heater Assembly.
Heater Assembly.
Y E S
NO
NO
AC 220V~240V
1 2
BROWN
BLUE
24
S P IN T R OUB L E
Check on the spinning, is the frequency
of the water level 248 or more. The
frequency can be checked by pressing
the Rinse and Temp buttons at
the same time on the program.
of the water level 248 or more. The
frequency can be checked by pressing
the Rinse and Temp buttons at
the same time on the program.
When pressing Beeeper,Rinse and
POWER buttons at the same time after
power off, press the Start/Pause button 1
times, is the drum low speed spin?
POWER buttons at the same time after
power off, press the Start/Pause button 1
times, is the drum low speed spin?
Is it disconnected, or disassembled?
Replace the MAIN PWB ASSEMBLY
Check the motor connector, is the
resistance of the terminal same as the
figure?
MOT OR T E R MINA L (1)
resistance of the terminal same as the
figure?
MOT OR T E R MINA L (1)
Resistance of terminal:
~ / ~ / ~ :A bout 5 ~15
Check the S.PRESSURE
SHITCH ASSEMBLY or
HOSE (Pressure).
If the problem is on the
S.PRESSURE SWITCH
ASSEMBLY or the HOSE,
replace the
S.PRESSURE SWITCH
ASSEMBLY or the HOSE.
SHITCH ASSEMBLY or
HOSE (Pressure).
If the problem is on the
S.PRESSURE SWITCH
ASSEMBLY or the HOSE,
replace the
S.PRESSURE SWITCH
ASSEMBLY or the HOSE.
Normal
Correct the connector.
Replace the STATOR
ASSEMBLY
ASSEMBLY
Y E S
NO
NO
NO
Y E S
Y E S
Y E S
NO
1
2
3
1
2
2
3
3
1
DR A IN T R OUB L E
Does the spring of Latch Hook actuate?
Is there clicking sound once or twice when
the S T A R T / P A US E button is pressed to
start the cycle?
the S T A R T / P A US E button is pressed to
start the cycle?
Check the DOOR
SWITCH ASSEMBLY
Connector and MAIN PWB
ASSEMBLY [Black(1),
Brown/Yellow(2)].
SWITCH ASSEMBLY
Connector and MAIN PWB
ASSEMBLY [Black(1),
Brown/Yellow(2)].
Replace Door Assembly.
NO
NO
Y E S
Y E S
Is DOOR SWITCH ASSEMBLY broken?
Replace the DOOR
SWITCH ASSEMBLY.
SWITCH ASSEMBLY.
Y E S
(1)
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