DOWNLOAD LG WD-12230TB / WD-12231TB Service Manual ↓ Size: 1.91 MB | Pages: 35 in PDF or view online for FREE

Model
WD-12230TB WD-12231TB
Pages
35
Size
1.91 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wd-12230tb-wd-12231tb.pdf
Date

LG WD-12230TB / WD-12231TB Service Manual ▷ View online

20
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
Wiring diagram
option (HOT)
option (HOT)
MAX
max
Is the water supply shut-off?
Is the tap opened?
When you press both Bio button and Time Delay
button simultaneously, is the water level frequency
below 240?
Is the inlet valve filter clogged with impurity?
Is resistance of the inlet valve connector 
between the 2 to 8
k
?
Check the voltage between each terminals of inlet
Valve is 220 - 240V~.
(Refer to 7-2 TEST MODE)
Is water supplied?
Are replaceptacles correctly connected to the
terminals of inlet valve?
Is detergent put in the correct compartment of
the drawer?
Is the detergent caked or hardened?
Open the tap.
Check the chamber (Air)
and the tube clogged 
with impurity. 
Clean the filter.
Replace the inlet valve.
Replace PWB assembly
(Main)
Refer to solution
NO INLET
Check the wiring on the
dispenser.
Put the detergent in the
correct position 
PRE+MAIN
MAIN WASH
: Detergent 
Clean the drawer.
NO WATER SUPPLY
DETERGENT DOES NOT FLOW IN
MAIN
WASH
SOFTENER
PRE -
WASH
21
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
Wiring diagram
option (HOT)
MAX
max
ABNORMAL SOUND
SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt
(4400FR3116A)
Replace the motor.
Refer to
NO WATER SUPPLY
Check the wiring on the 
dispenser.
Put it in the correct
compartment.
Clean the cap and
drawer.
Is the pulley bolt loosened?
Is the belt worn?
Is there friction noise from the motor?
Is water supplied?
Are receptacles correctly connected to the terminals
of inlet valve?
Is softener put in the correct compartment of
drawer?
Is the softner cap clogged?
22
AC 220-240V
NO
NO
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
2
PWB ASSEMBLY (MAIN)
PWB ASSEMBLY (MAIN)
1
Replace the sensor 
(pressure)
Replace the PWB
assembly (Main)
Repair drain hose
Remove foreign
material.
Reconnect or repair the
connector
Replace the pump
assembly
Replace the PWB
assembly (Main) 
When pressing [Medic Care Rinse] and [Time
Delay] at the same time after draining, is  the
water level frequency 252 or more?  
When pressing  [Medic Care Rinse], [Time
Delay] buttons at the same time while wash, is
the water level frequency between 
220 - 240?
Checking voltage between two pins as press
the power button is the voltage  220 - 240V~?
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected, disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160Ω)
When checking voltage between connectors
()on spinning, is the voltage 220 - 240V~ 
as the figure?
HEATING WITHOUT WATER
DRAIN MALFUNCTIONING
23
NO
YES
YES
WASH HEATER TROUBLE
When checking the voltage between 
connector the PWB assembly (Main)during 
cotton washing ,Is the voltage 
220 - 240V    ?
Replace the PWB 
assembly (Main)
YES
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30   ?
Replace the heater 
assembly
NO
After power off,is the resistance of wire
(BROWN-BLUE) connectors between
10    to 30   ?
Normal
NO
YES
BROWN
BLUE
2
3
  ~    
(1)
AC 220-240V
PWB ASSEMBLY (MAIN)
Replace the thermistor
(6322FR2046F)
Push the thermistor
tightly to the rubber.
When disconnect the connector (1) on the 
PWB assembly (Main) is the resistance of the 
Natural connectors [②( Violet),
③(Orange)]between  2.5kΩ to 180kΩ
(105
~0
)?
When checking thermistor on the tub, 
is the thermistor loosened above 2mm from 
the rubber?
HEATING CONTINUOUSLY ABOVE 
THE SETTING WATER TEMPERATURE
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