LG F1407TDS6 / F1407TDSP6 / F1407TDSP7 / F1407TDSP9 / F1407TDSPU Service Manual ▷ View online
21
SOFTENER DOES NOT FLOW IN
ABNORMAL SOUND
Is water supplied?
Are receptacles correctly connected to
the terminals of the INLET VALVE
ASSEMBLY?
the terminals of the INLET VALVE
ASSEMBLY?
Refer to
[ NO WATER SUPPLY ]
Check the wiring on the
dispenser.
YES
YES
NO
Is softener put in the correct
compartment of the drawer?
Put it in the correct
compartment.
NO
Is the softener cap clogged?
NO
Clean the cap and
drawer.
drawer.
YES
YES
Is the motor bolt loosened?
Is there friction noise from the motor?
Fix the bolt tightly.
Replace the STATOR
ASSEMBLY or ROTOR
ASSEMBLY.
ASSEMBLY or ROTOR
ASSEMBLY.
NO
YES
YES
Detergent for
main wash
Detergent for
pre wash
Fabric
softener
22
HEATING WITHOUT WATER
When pressing Rinse and Medic 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?
Checking voltage between two pins
(Connector RD & YL )as press
the POWER button is the voltage
220-240V~?
(Connector RD & YL )as press
the POWER button is the voltage
220-240V~?
Replace the
S.PRESSURE
SWITCH ASSEMBLY.
Replace the MAIN
PWB ASSEMBLY.
YES
YES
NO
DRAIN MALFUNCTIONING
Is the drain hose twisted or frozen?
Repair the DRAIN
HOSE ASSEMBLY.
HOSE ASSEMBLY.
NO
YES
Is the impeller of the drain pump clogged?
Remove foreign
material.
material.
NO
YES
Is the connector disconnected,
disassembled?
disassembled?
Is the coil of the drain pump cut-off?
(resistance of coil is 80~150Ω )
When checking voltage between
connectors ( , )on spinning, is the
voltage 220-240V~ as the figure?
Repair the DRAIN
PUMP ASSEMBLY.
Repair the MAIN PWB
ASSEMBLY.
Reconnect or repair the
connector.
connector.
NO
NO
YES
NO
YES
1
4
AC 220V~240V
<PWB ASSEMBLY (MAIN)>
1
1
23
WASH HEATER TROUBLE
When checking the voltage between
connector during whites washing. is
the voltage 220-240V~?
After power off, is the resistance of
wire (BN-BL) connectores between
10Ω ~ 30Ω?
wire (BN-BL) connectores between
10Ω ~ 30Ω?
After power off and the heater terminal
is disconnected, is the resistance
10Ω ~ 30Ω?
is disconnected, is the resistance
10Ω ~ 30Ω?
Replace the MAIN
PWB ASSEMBLY.
Normal
Replace the
HEATER ASSEMBLY.
YES
NO
NO
YES
NO
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
When pressing Rinse and Medic Rinse
button simultaneously during, is the
displayed temperature is over 10
higher than the selected temperature?
(Refer to the 7-2 QC Test Mode)
Is the resistance between Thermistor
Comectors 2.5kΩ~180kΩ?
Check if inlet hose is
connected to a hot
faucet ; otherwise,
replace PWB
ASSEMBLY (Main).
Replace
Heater Assembly.
YES
NO
NO
AC 220V~240V
1
2
BROWN
BLUE
24
SPIN TROUBLE
Check on the spinning, is the frequency
of the water level 248 or more. The
frequency can be checked by pressing
the Rinse and Medic Rinse buttons at
the same time on the program.
When pressing Rinse, Medic 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?
[Red:3pin(1), GY:4pin(2)]
[Red:3pin(1), GY:4pin(2)]
Replace the MAIN PWB ASSEMBLY
Check the motor connector, is the
resistance of the terminal same as the
figure?
MOTOR TERMINAL (1)
Resistance of terminal:
~ / ~ / ~ : About 5 Ω~15 Ω
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
YES
NO
NO
NO
YES
YES
YES
NO
1
2
3
1
2
2
3
3
1
DRAIN TROUBLE
Does the spring of Latch Hook actuate?
Is there clicking sound once or twice when
the START/ PAUSE button is pressed to
start the cycle?
the START/ PAUSE 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
YES
YES
Is DOOR SWITCH ASSEMBLY broken?
Replace the DOOR
SWITCH ASSEMBLY.
SWITCH ASSEMBLY.
YES
[1]
[2]
[1]
[2]
(1)
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