LG 31513 Service Manual ▷ View online
29
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 turns on. (Cold Water)
A and Water level frequency (1~10 Level)
4 time
※
On :67~33(26.7kHz~23.3kHz)
※
The meaning of 67~33 number is 26.7kHz~23.3kHz really
Inlet valve for Softener Dispenser turns on. (Hot Water)
B and Water level frequency (1~10Level)
5 time
Inlet valve for J-Dispenser turns on. (Cold Water)
C and Water level frequency (1~10Level)
6 time
Heater check (on heater model)
T4 and the coefficient of flood sensing
7 time
Wave force check
T5 and the coefficient of load sensing
8 time
Drain pump and agitate (pulsator) check
T6 and Water level frequency
9 time
Agitate (tub) check
T7 and the coefficient of load sensing
10 time
High speed spin
T8 and RPM
Off
11 time
. Unlocks the door
None
. Turns off all LED
Number of times the
START/PAUSE
button is pressed
Check Pont
Display Status
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 in the off state.
•
Press and hold the SOAK and ADD A GARMENT buttons; then press the POWER button. The buzzer will
sound twice.
•
Press the Start/Pause button to advance to the subsequent test mode step.
4-3. TEST RUNNING WITHOUT WATER
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.
NOTE: NEVER use bar soap in the washing machine.
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 Scrud (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.
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.
4-4. TROUBLESHOOTING BY COMMON WASHING PROBLEMS
31
4-5. TROUBLESHOOTING SUMMARY
Display Pin1:
Tx
Pin2: Rx Pin3: SMPS2_5V Pin4: GND Pin5:
-
Pin6: SMPS2_13V Pin7:
TEST
32
4-6. TROUBLESHOOTING WITH ERROR CODE
Trouble
IE
OE
dE
dL
FE
tE
PE
LE
No Power
1. Verify the valve is open and water is on.
2. Check the filter on inlet valve whether
clogged with foreign material or not.
3. Check the connector of valve and RD6 on PCBA.
4. Check the testmode (Testmode 3)
5. Check the valve resistance. (0.8-1.2 kΩ)
1. Check the test mode (Testmode 6)
2. Check the connector of PCBA or pump or
connection connector
3. Check the connection from PCB to pump by tester
4. Check the pump SPEC (resistance of the coil is
10-20 Ω) and input voltage on working (120V±5%)
1. Connect other doorlock switch and check the lid
sensing by magnet
1. Check the doorlock switch trying locking
2. Check the balance of the lid.
1. Check the Water level
(1) Power on and run
(2) Press the DELAY WASH & EXTRA RINSE
2. Check the valve
1. Check the connector of PCBA (YL2) or thermistor
or connection connector
2. Check the cutted connection from PCB to
thermister by tester
1. Check the Presure Sensor (21~23 Ω ±10%) and
connection
2. Check the Connector (BL6)
1. Check the connector of PCBA (YL3, BL6) or
motor connector or connection connector
2. Check the magnet for Rotor
3. Check the Rotor Resistance (YL3) 5 to 15 Ω
(U-V, V-W, W-V :U=1, V=2, W=3)
1. Check the fuse for noise filter and PCBA by tester
2. Check the IPM
-. Check the Short between top switch
Heatsink and YL3 pin by Tester
Check
counterplan
1. Turn the tap on.
2. Clean or replace the filter
3. Reconnect or repair the connector
4. Replace the PCBA
5. Replace the inlet valve assembly.
1. Replace the PCBA
2. Reconnect or repair the connector
3. Replace harness
4. Replace pump
1. Replace the doorlock switch or PCBA
1. If trying, replace the doorlock switch.
Or not trying replace the PCBA
2. Replace the door or set the balance
1. If segment is displayed under 10,
replace the PCBA
2. Replace the valve
1. Reconnect or repair the connector
2. Replace harness
1. Reconnect or repair the connector
1. Reconnect or repair the connector
2. Replace the rotor.
3. Replace the stator.
1. If the beep sounds, the fuse is OK.
If no beep, change the noise filter,
including the fuse.
2. If beep sound, replace the PCBA.
Click on the first or last page to see other 31513 service manuals if exist.