LG WM2688HWMA Service Manual ▷ View online
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7. TROUBLESHOOTING
7-1. BEFORE PERFORMING SERVICE
■ Be careful of electric shock when disconnecting parts while troubleshooting.
■ The voltage of each terminal is 120 V AC and DC when the unit is plugged in.
■ The voltage of each terminal is 120 V AC and DC when the unit is plugged in.
7-2. QC TEST MODE.
The washer must be empty and the controls must be in the off state.
1. Press the SPIN SPEED and SOIL LEVEL buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Press the WASH/RINSE and SOIL LEVEL button simultaneously.
So, for example a display indicating 058: a Water level frequency of 20+(58 x 0.1)
= 25.8 kHz
• The digits indicate the water level frequency.
Check Point
Display Status
None
Turns on all lamps and locks the door.
1 time
Tumble clockwise.
rpm (42~50)
2 times
Low speed Spin.
rpm (55~65)
3 times
High speed Spin.
rpm (125~135)
4 times
Inlet valve for prewash turns on.
Water level frequency (25~65)
5 times
Inlet valve for main wash turns on.
Water level frequency (25~65)
6 times
Inlet valve for hot water turns on.
Water level frequency (25~65)
7 times
Inlet valve for steam turns on.
Water level frequency (25~65)
8 times
Inlet valve for bleach turns on.
Water level frequency (25~65)
9 times
Tumble counterclockwise.
rpm (42~50)
10 times
Heater turns on for 3 sec.
Water temperature
11 times
Circulation pump turns on.
Water level frequency (25~65)
12 times
Drain pump turns on.
Water level frequency (25~65)
13 times
Steam Heater turns on for 1.2 sec.
TSG temperature
14 times
Off
-
Number of times the
Start/Pause button is pressed
QC TEST MODE
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7
7-4. ERROR DISPLAY
If you press the START/PAUSE button when an error is displayed, any error except
d
ewill
disappear and the machine will go into the pause status.
In case of
d
e,
d
e,
d
eif the error is not resolved within 20 sec., or the in case of other
errors, if the error is not resolved within 4 min., power will be turned off automatically and the error
code will blink. But in the case of
code will blink. But in the case of
d
e, power will not be turned off.
ERROR SYMPTOM
CAUSE
WATER INLET
ERROR
• Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.
level within 25 minutes.
• The load is too small.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable things are put into the drum.
• The appliance is tilted.
• Laundry is gathered to one side.
• Non distributable things are put into the drum.
1
2
IMBALANCE
ERROR
• Not fully drained within 10 minutes.
3
DRAIN
ERROR
• Water is overflowing (water level frequency is over 213).
※ If is displayed, the drain pump will operate to
drain the water automatically.
4
OVER FLOW
ERROR
• The SENSOR SWITCH ASSEMBLY is out of order.
5
PRESSURE
SENSOR
ERROR
• Door not all the way closed.
• Loose electrical connections at Door switch and
• Loose electrical connections at Door switch and
PWB Assembly.
• The DOOR SWITCH ASSEMBLY is out of order.
6
DOOR OPEN
ERROR
• The THERMISTOR is out order.
7
HEATING
ERROR
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8
ERROR SYMPTOM
CAUSE
• The connector (3-pin, male, white) in the MOTOR
HARNESS is not connected to the connector
(3-pin, female, white) of STATOR ASSEMBLY.
(3-pin, female, white) of STATOR ASSEMBLY.
• The electric contact between the connectors
(3-pin, male, white) in the MOTOR HARNESS
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
• The MOTOR HARNESS between the STATOR
ASSEMBLY and MAIN PWB ASSEMBLY is cut (open
circuited).
circuited).
• The hall sensor is out of order/defective.
8
LOCKED
MOTOR
ERROR
• The washer experienced a power failure.
11
POWER
FAILURE
• EEPROM is out of order.
※ Displayed only when the START/PAUSE button is first
pressed in the QC Test Mode.
10
EEPROM
ERROR
EE
F
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8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHECK LIST
SYMPTOM
GUIDE FOR SERVICE CALL
No power
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
Is the power plug connected firmly to
120 V AC outlet?
120 V AC outlet?
Power failure? or Breaker opened?
Is the outlet controlled by a switch?
Is the outlet controlled by a switch?
Visit to service.
Is displayed?
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with
foreign material?
foreign material?
Visit to service.
Clean the filter of
inlet valve
inlet valve
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