LG WT1701CV / WT1701CW Service Manual ▷ View online
29
1) SAFETY CAUTION
• The main power board assembly has exposed live 120 VAC and live DC voltages. Use care when disconnecting
connectors during troubleshooting and testing. (Wear electrostatic discharge gloves when handling the board.
• Unplug the power when handling the board assembly. (Wear electrostatic discharge gloves when handling the
board. Store the board in an ESD [ElectroStatic Discharge] plastic bag.)
2) SERVICE MODE
The washer must be empty and the controls must be plugged in and turned off.
• Press and hold the SPIN SPEED and Water Plus button: then press the POWER button. The buzzer will sound
twice.
• Press the Start/Pause button to advane to the subsequent test mode step.
4-3. TEST RUNNING WITHOUT WATER
Number of times the
START/PAUSE
button is pressed
Check Point
Display Status
None
Main program version
T1 and main program version
1 time
Display program version
T2 and display program version
2 time
None
T3
3 time
Inlet valve for bleach detergent turnson. (Cold Water)
A and water level frequency (1~10 Level)
4 time
⁕ On :67~33 (26.7kHz~23.3kHz)Inlet valve for softener
dispenser turnson. (Hot water)
⁕ The meaning of 67~33 number is26.7kHz~23.3kHz
reallyB and water level frequency (1~10 Level)
5 time
Inlet valve for J-dispenser turns on.(Cold Water)
C and water level frequency (1~10 Level)
6 time
Heater check (on heater model)
T4 and the coefficient of flood sensing
7 time
Heater check (on heater model)
T5 and alpha RPM
8 time
Drain pump and agitate (pulsator) check
T6 and water level frequency
9 time
Load sensing Check
T7 and the coefficient of load sensing
10 time
Agitate (tub) check
T8 and RPM
11 time
Spin Check
T9 and RPM
12 time
Off
• Unlocks the door
• Turns off all LED
None
30
Many washing problems involve poor soil and stain removal, residues of lint and scum, and fabric damage. For
satisfactory washing results, follow these instructions.
Use ONLY powdered or liquid HE (High Effificiency) detergents. Do NOT use flakes scraped from a soap
cake or bar, flakes, soap ribbons (available in some markets,) detergent tablets, plastic pouches, magic
laundry balls, or anything other than powdered or liquid HE detergent products. Do not use soap of any kind.
Do not use other types of detergent or soap products, such as hand soap, dishwashng liquid, or any others.
4-4. TROUBLESHOOTING BY COMMON WASHING PROBLEMS
WASHING PROBLEM
Problems
Poor soil
removal
Blue Stains
Black or gray
marks on
clothes
Yellow or
brown rust
stains
Lint
Residue or
Detergent
Holes, tears,
or snags
Possible Causes
·
Insufficient detergent
·
Wash water temperature too low
·
Incorrect wash cycle
·
Laundry missorted
·
Stains not properly pretreated
·
Undiluted fabric softener
dispensed directly onto fabric
·
A buildup caused by the interaction
of fabric softener and detergent
can flake off and mark clothes
·
Not enough detergent
·
Iron or manganese in water
supply, water pipes, or water
heater
·
Incorrect sorting
·
Tissues left in pocket
·
Overloading the washer
·
Overloading the washer
·
Undissolved detergent
·
Excessive detergent
·
Incorrect use of chlorine bleach.
·
Unfastened zippers, hooks,
buckles
·
Ribs, tears and broken threads
·
Overloading the washer
·
Degradation of fabric
Solutions and Preventive Measures
·
Use correct amount of detergent for load size, amount of soil and
water hardness.
·
Use WARM or HOT water for normal soil. Different water
temperature may be required according to soil type. (refer to page 10)
·
Reduce load size.
·
Wash with heavy or soak & heavy wash cycle for heavy soiled
laundry.
·
Separate heavily soiled items from lightly soiled ones.
·
Pretreat stain and heavy soil according to directions shown on
page 15.
·
Pretreat the stain with detergent or a stain removal agent.
·
Do not overfill fabric softener dispenser and do not pour liquid fabric
softener directly onto fabric.
See page 13 for more instructions.
·
Keep the recommendations against scum (waxy buildup).
·
Use correct amount of detergent for load size, soil level,
and water hardness.
·
To restore discolored load of whites, use rust remover safe for
fabric.
·
Install nonprecipitating water softener or an iron filter in your
water supply system for an ongoing problem.
·
Before washing, run water for a few minutes to clear lines.
·
Wash lint-producing items, like flannel sheets, towels, and the like
separately from dark fabrics and fabrics that tend to collect lint.
Remove all items, including tissues and papers, from the pockets of
items to be washed. See page 9 for sorting information.
·
Do not overload the washer.
·
Do not overload the washer.
·
Some detergents need to be pre-dissolved, check the
detergent instructions. Try pre-dissolving the detergent.
·
Increase water temperature using HOT water safe for fabric.
·
Use proper amount of detergent.
·
Never pour chlorine bleach directly on fabric.
See page 11 for adding liquid bleach.
·
Fasten zippers, hooks, and buckles.
·
Remove objects in pockets. See page 9 for caring before loading.
·
Do not overload the washer.
4-5. TROUBLESHOOTING SUMMARY
31
Hall Sensor(BL4
)
Pin1 : Hb Pin2 : GN
D
Pin3 : Ha Pin4 : +
Motor(YL3
)
Pin1 :
W
Pin2 :
V
Pin3 :
U
Clutch(BL2
)
Pin1 : Clutch Motor(output)(120VAC
)
Pin3 : Clutch_Sensing(Input)(120
VA
C)
Pump(BL3
)
Pin1 : Common(AC_Live)(120
VA
C)
Pin3 : Drain Pump(output)(120
VA
C)
Doorlock Switch(WH6)
Pin1 : GN
D
Pin2 : LIDLOCK_SIGNAL(Input
)
Pin3 : LIDLOCK_CONTROL(Output
)
Pin4 : LID_S
W
Pin5 : REED_S
W
Display(CN2)
Pin1 : 16.5v Pin2 : LID_S
W
Pin3 : BZ_OUTPU
T
Pin4 :
-
Pin5 : BZ_PWM_SMAR
T
Display(CN1)
Pin1 : Rx Pin2 :
Tx
Pin3 : GN
D
Pin4 :
-
Pin5 : 5v Pin6 :
TEST
Display(CN3)
Pin1 : NORMAL_CONNECT Pin2 : NORMAL_OPEN Pin4 : COMMO
N
Thermistor & Pressure Sensor(BL6
)
Pin3 :
Te
mp(inpu
t)
Pin6 : GN
D
Pin2 : S1
Pin4 : GN
D
Pin5 : S2
(YL2)
Pin1 : Sensing Pin
1
Pin2 : Sensing Pin
2
4-6. TROUBLESHOOTING WITH ERROR CODE
32
ERROR
ERROR DECISION
BASIS
CAUSE FOR ERROR
OCCURRENCE
REMEDY
WATER
SUPPLY
DRAINAGE
UNBALANCE
LID
OPEN
·
WATER LEVEL
dose not rise to
the set level in within
30 minutes.
NO INLET
lamp blinks
·
Water is not
completely drained
within 12 minutes.
·
Laundry
unbalance during
spin.
·
LID is opened in
the course of
intermittent spin,
normal spin or
processing
reservation.
·
Water faucet is closed?
·
Water supply is interrupted.
·
Inlet valve is clogged with
dirts.
·
Connector has bad contact
to the inlet valve.
·
RED 6-pin connector has
a bad connection at the main
board.
·
Is the drain hose located
properly?
·
Drain hose is folded or
clogged due to freeze or dirt.
·
Defective drain pump or the
WHITE 6-pin connector to the
main board has a bad
connection.
·
Laundry in the INNER TUB
is filled unevenly.
·
Washer is tilted.
·
Lid is opened during
intermittent spin or normal
spin?
·
Lid is opened while
processing
reservation
?
·
Check the connections to the lid
switch and at the WHITE 6-pin
connector at the main board.
·
Open water faucet.
Wait until water supply is
resumed.
·
Clean or replace filter.
·
Correct the connector
contact.
·
Same as above.
·
Drain hose properly positioned
at 0.9 ~ 1.2 m (36 ~ 48 inches)
above the floor.
·
Make sure the drain hose is not
plugged with a foreign object.
·
Check drain pump motor
contact. Replace the pump if
necessary.
·
Load the washer as evenly as
possible.
·
Adjust the leg.
·
Close the lid.
·
Close the lid.
·
Check the connections.
·
If the connection is good, check
the lead wire and replace it if
necessary.
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