DOWNLOAD LG WD-12MPAE / WD-12MRS Service Manual ↓ Size: 6.32 MB | Pages: 45 in PDF or view online for FREE

Model
WD-12MPAE WD-12MRS
Pages
45
Size
6.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wd-12mpae-wd-12mrs.pdf
Date

LG WD-12MPAE / WD-12MRS Service Manual ▷ View online

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7. TROUBLE SHOOTING
7-1.BEFORE SVC CHECKING
■ Be careful of electric shock or disconnecting the parts while trouble shooting.
■ Voltage of each terminal is 220-240V~ and DC while applying an electric current.
7-2.QC TEST MODE.
① Pressing  Rinse, and Temp. button simultaneously.
② Press the Power        button, while the above condition.
③ Press the Start/Pause button as follows.
7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY
Press the Rinse and Temp. button simultaneously.
ex) 241 : Water level frequency = 241
× 10
-1
kHz
=24.1 kHz
7-4.HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR
AT OPERATING CONDITION.
■ Thermistor in tub : Press the [Temp.] button.
■ Thermistor in dry duct : Press the [Turbo Steam] button.
The digits means water level frequency(10
-1
kHz) 
Number of times the
Start/Pause button is pressed
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 (110~120)
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 water turns on.
Water level frequency (25~65)
8 times
Inlet valve for dry water turns on.
Water level frequency (25~65)
9 times
Tumble counterclockwise
rpm (42~50)
10 times
Wash 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
Dry heater turns on for 3 sec.
Water temperature
14 times
Water level Sensor for Steam
Water level frequency of TSG (0~255)
15 times
Steam Heater turns on for 1,2 sec.
TSG temperature
16 times
Power off and unlock the door.
Turn off all lamps.
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7-5.ERROR DISPLAY.
If you press the Start/Pause button in error condition, any error except ‘
’ will disappear and the
machine will change into pause status.
In case of 
d
e, d
e, d
e, if the error is not resolved within 20 sec., and in case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error will remain
blinking. But in case of 
d e, power will not be turned off.
ERROR
SYMPTOM CAUSE
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2
3
4
5
6
7
• Has not reached the water level(246)within 8
minutes after water supplied or not reached
the preset water level within 25 minutes.
• Not fully drained within 10 minutes.
• Water is over flowing(over 8 level).
※ If              is displayed, drain pump operates to
drain water automatically.
• The sensor pressure switch is out of order.
• In case of operating the time delay function or
other functions with door opened. Close the
door, then the error display will be cancelled.
• The door switch is out of order.
• The appliance is tilted.
• Laundry is gatherd to one side.
• The THERMISTOR is out of order.
WATER INLET
ERROR
DRAIN ERROR
OVERFLOW
ERROR
SENSOR PRESSURE
S/W ERROR
DOOR OPEN
ERROR
IMBALANCE
ERROR
HEATING
ERROR
1
5
ERROR
SYMPTOM CAUSE
8
9
• The connector in the LEAD WIRE ASSEMBLY is not connected to
the connnector of STATOR ASSEMBLY
Reconnect or repair the connector
• The hall sensor is out of order/defective.
Replace the STATOR ASSEMBLY
• The Dry Heater is out of order
Replace the Dry Heater
• The Connector of the Dry Heater is not connected properly to the
connector in the Main PWB ASSEMBLY
Reconnect or repair the connector
• The Dry fan motor is out of order
Replace the fan Motor.
MOTOR
ERROR
DRY
HEATOR
ERROR
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8-1.DIAGNOSIS AND ANSWER 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
No Inlet
Is the power plug connected firmly to 
AC 220-240V outlet?
Power failure? or Breaker opened?
Visit to check 
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?
Visit to check 
Clean the filter of
inlet valve
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