LG Wm2688hm Service Manual

20
SYMPTOM                            GUIDE FOR SERVICE CALL
Suds overflow from the
appliance.
(In this condition, wash and 
spin do not operate normally)
YES
YES
YES
YES
405&/&3 .9
Is a HE (High Efficiency) detergent used?
Is the proper amount of detergent used 
as recommended?
Recommend to reduce the amount 
of detergent.
Is liquid laundry product put in the correct
compartment of the  dispenser?
Is the cap clogged?
Explain proper use of liquid laundry products.
Clean the compartment.   Visit to...

21
NO
YES
YES
YES
YESNO
NO
NO
NO
YES
Connector
SB
SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BK WH
SB
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BK WH
SB
Is the supplied voltage 120 V AC?
Is the voltage between the 2 FILTER ASSEMBLY
connectors 120 V AC?
Is the LED (1) on?
Are the connectors (2) on the PWB loose?
Is wire of the DISPLAY PWB ASSEMBLY  
broken?
Replace  DISPLAY PWB ASSEMBLY 
or repair wire. Check the fuse or reset
the circuit breaker.
Replace the FILTER
ASSEMBLY...

22
YES
YES
YESNO
NO
Unbalance Part
Base Packing
Level
Tighten
Tighten
Have all the transit bolts and base packing
been removed? Remove the transit bolts
and Base packing.
Move the washer or
reinforce the floor.
Is the washer installed on a solidly constructed
floor?
Check if the washer is perfectly level as follows:
Check the leveling of the washer with a Level
and check that the washer is stable.
Put an unbalance part (rubber) inside of drum
and start QC test mode and run in high spin
(Refer to section...

23
NO
YES
NO
NO
YES NO
YES
YES
NO
NO
YES
YES
YES NO
NO
NO
YES
405&/&3 .9
5
4
\bleach
\bleach
Steam
Steam
Is water supply shut-off?
Is the tap opened?
When you press both 
WASH/RINSEbutton and
SOIL LEVEL button simultaneously, is the water
level frequency below 246?
Is the inlet valve filter clogged?
Is resistance between each terminal of INLET
VALVE ASSEMBLY 0.8-1.2 
k Ω? 
Verify the voltage of the inlet valve connector is 
120 V AC.
(Refer to 7-2 QC TEST MODE)
Is water supplied?
Are receptacles...

24
Softener
cap
Liquid detergent cap
405&/&3 .9
405&/&3.9
Bleach capSOFTENER
Bleach
Steam
ABNORMAL SOUND
LIQUID DETERGENT/SOFTENER/BLEACH DOES NOT FLOW IN
Secure the bolt.
Replace the STATOR
ASSEMBLY or ROTOR
ASSEMBLY. Refer to
G) NO WATER SUPPLYG*
Check the wiring on the 
dispenser.
Put it in the correct
compartment.
Clean the Cap and
Container.Is the motor bolt loosened?
Is there friction noise coming from the motor? Is water supplied?
Are the plugs correctly connected to the terminals of
the INLET...

25
NO
YES
YES
YES
YES
NO
NO
NO
NO YES
YES
NO
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BK WH
SB
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BK WH
SB
Replace the
SENSOR SWITCH
ASSEMBLY.
Replace the MAIN PWB
ASSEMBLY.
Repair the DRAIN HOSE 
ASSEMBLY.
Remove foreign material.
Reconnect or repair the
connector
Replace the DRAIN
PUMP ASSEMBLY.
Replace the MAIN PWB 
ASSEMBLY.
Whenpressing WASH/RINSE and SOIL LEVEL at the
same time after draining, is  the water level frequency
255?...

26
(1)
Extra Hot: 70 °C
and 
SOIL LEVEL at the same time
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BL
RD YL BK
BKWH
SB
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BKWH
SB
Push the THERMISTOR
tightly to the rubber.
Replace the
Heater Assembly
When checking the THERMISTOR on the tub, 
is the THERMISTOR loose?
Water Temperature [
°C]
HEATING CONTINUOUSLY ABOVE 
THE SETTING WATER TEMPERATURE WASH HEATER TROUBLE
***
***
***
***
***
***
***
***
***
***
***
***
***  

27
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Connector
Connector
Hose Connector
(Water circulation & Steam Nozzle)
Hose
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BK WH
SB
WILL NOT CIRCULATE WATER
Is the impeller of the drain pump clogged?
Are the Hose Connector and/or Hose clogged?
Is the connector disconnected, disassembled?
Is the coil of the right side of drain pump open
or short circuited? (Coil R is 18-30 
Ω)
When checking voltage between the 
connectors during spin, is the voltage 120 V...

28
(1)(2)
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BKWH
SB
SB SB
BL
YL BL
BL
YL
WHWH WH
WH WH
SB
RD
RD
BLRD YL BK
BKWH
SB
SPIN TROUBLE
Check the SENSOR SWITCH
ASSEMBLY or HOSE (Pressure). 
If the problem is on the SENSOR
SWITCH ASSEMBLY or the
HOSE, replace the SENSOR
SWITCH ASSEMBLY or the
HOSE.
Normal
Correct the connection.
Replace the STATOR
ASSEMBLY
Check during spin if the frequency of the water
level is 248 or more. 
Press the  START/PAUSE
button 2 times in QC
Test mode, is the drum...

29
9. DISASSEMBLY INSTRUCTIONS
DISPLAY PW\b ASSEM\bLY
TOP PLATE ASSEM\bLY
CONTROL PANEL ASSEM\bLY
DRAWER
CONTROL PANEL ASSEM\bLY
$0/530-
1/&-
44&.#-:
I
Be sure to unplug the machine out of the outlet before disassembling and\
 repairing the parts.