Page 1
7. Troubleshooting
7-1 Self - diagnostic Functions (Buzzer Alarm)
If there is a problem during operation, the following error conditions are shown on the LED display, and the
washing machine stops its operation.
SAMSUNG ELECTRONICS CO., LTD 7-1
Error Condition Buzzer Solution
Water level sensor error Water level sensor fails to send The buzzer sounds five times Press the "Power"
signal for longer than 15 seconds. with a 0.5sec. ON/0.5sec. OFF button. No other
cycle. buttons work.
Auto - off error Power does not turn off despite 3 the buzzer sounds five times Press the "Power"
power-off trials by program with a 0.5sec. ON/0.5sec. OFF button.
cycle. Another buttons do
not work.
Water supply error No frequency change for 60 The buzzer sounds five times Press the "Power"
minutes from water supply. with a 0.5sec. ON/0.5sec. OFF button.
cycle. No other buttons
work.
Drain error Water level does not decrease to The buzzer sounds five times Press the "Power"
the reset point within 6 minutes with a 0.5sec. ON/0.5sec. OFF button.
from draining water. cycle.
No other buttons work.
Door open error Door is open during The buzzer sounds five times Close the door.
dehydration cycle. with a 0.5sec. ON/0.5sec. OFF
cycle.
Pressing "start" button stop
the buzzer.
No buttons work.
Unbalance error An unbalanced load is sensed three The buzzer sounds five times Open the door.
times during dehydration cycle. with a 0.5sec. ON/0.5sec. OFF Balance the laundry.
cycle. Close the door.
Pressing "start" button stops
the buzzer.
No other buttons work.
Page 2
7-2 Test Mode
7-2-1 Test Mode : WA TER LEVEL + POWER
1. Entering : Press the power key while pressing down the WATER LEVEL button.
2. Ò Ò is displayed on the display.
3. If you press the COURSE key, the test mode changes step by step.
4. The test is conducted if you press the START/HOLD key when the test mode is in a display state.
5. Each mode description
*
Mode are only for manufacturing process.
7-2 WASHING MACHINE
7. Troubleshooting
MODE NO DISPLAY TEST DESCRIPTION REMARKS
1
2
3
4
Aging test in driving part and then, driving part and
display are turned ON/OFF for 1 second.
Repeating 5 min. dehydration and 3 min. stop without draining.
It read Lid open and unbalance and shows them.
It shows this on the indicator.
Operate the washing cycle after suppling water
to high level.
Indicate the input value of weight sensing pulse
with hexa value.
,
→ 01 → 02 → 03 → 04 → 05 → 06
Page 3
7-3 Servicing Precautions
When trouble shooting or parts, be sure to observe
the following.
1. Be sure to let the resistance of 1 M½contact the
human body before grounding. When it is
impossible to ground, let the human body contact
the power plug and the grounding wire once to
eliminate the potential damaging shock hazard.
¥ After replacing the controller, the defective parts
should be returned to the suppliers of these parts
for root-cause analysis and incorporation into for
future product planning. At the time of return, be
sure to pack them together with repair parts.
Otherwise, it is impossible to perform root cause
analysis due to the static electricity.
<Notice on disassembly and repair>
2. The wiring should be properly connected in
accordance with the wiring diagram. Erroneous
wiring may cause faulty operation, smoke, or fire.
3. Be sure to pull out the power plug during repair.
4. Special attention should be paid to connection,
insulation treatment, and wiring work for the lead
wire.
¥ The lead wire should be soldered, and insulation-
treated with vinyl tape, or connected to the
pressure connection terminal for drain treatment.
¥ When connecting the lead wire, take care not to let
it touch hight components of metal sugared. This is
a "wloow"
5.Be sure to use only authorized replacement parts.
6. AC 110V-220V is applied between T1 and T2 of the
triac on the P.C.B Therefore, touching the radiating
plate accidentally may cause electric shock. Also,
the P.C.B. Both high and low voltages exist on the
P.C.B.
7. Do not replace any parts on the board, except the
tact switch on the P.C.B. assembly is in trouble. The
P.C.B assembly is treated with an insulation
coating, the enhanced moisture-proofing.
8. When you suspect that the operation of the micom
is faulty, take actions in accordance with the
specified troubleshooting procedures. Do not
attempt to replace the entire P.C.B. assembly
without first doing a root-cause analysis.
9. Because the parts installed in the P.C.B. are treated
with a urethane coating, they cannot be inspected
by the test bar. Therefore, first check the lower parts
for any abnormality using the lead wire of the
housing (LP-09-1). Going down connected with the
P.C.B.
SAMSUNG ELECTRONICS CO., LTD 7-3
7. Troubleshooting
Page 4
7-4 Troubleshooting
7-4-1 Troubleshooting of the Power Supply Board
If any of the following occurs, the PCB is defective. Replace the PCB.
1. Pressing a selection button illuminates the LED display, but the buzzer does not sound.
2. Pressing a selection button sounds the buzzer, but does not illuminate the LED.
3. Pressing a selection button illuminates the wrong LED.
Insert the power plug into the receptacle and press the Power button. If the stored parameters do not display,
check the following :
7-4-2 Keyboard
¥ When pressing a selection button, the buzzer does not sound, or the LED does not display.
7-4 WASHING MACHINE
7. Troubleshooting
YES
YES
NO
YES
YES
NO
YES
NO
NO
The power does not turn on.
Connect the power plug securely.
Replace the fuse.
Check the harness.
Replace the transformer.
Is the power
plug connected?
Is the fuse blown?
Is the
connection of the power
trans harness OK?
Replace the PCB assembly.
Is the
output of secondary
side of power transformer
AC 11V(Red)?
YES
YES
YES
NO
NO
There is no buzzer sound, and the
LED display does not turn on.
Turn the power switch on.
Replace the selection switch (tact switch).
Is the power
switch turned on?
Are the contacts of the
selection switch OK?
Replace the PCB assembly.
Page 5
7-4-3 Driving Unit
¥ Water supply Error
SAMSUNG ELECTRONICS CO., LTD 7-5
7. Troubleshooting
YES
NO
YES
YES
YES
NO
NO
YESNO
YES
YES
YES
NO
YES
NO
Press the Start/Hold button.
Open the faucet.
Open the faucet.
Close the faucet, pull out the water
hose and turn it off.
Clean the water valve filter with a
toothbrush, etc.
Replace the water level sensor.
Water is not supplied.
Is the
Start/Hold button
pressed after selecting
the course?
Does the
water valve make a
"Jee" sound when water is
supplied ?
Is the connection
of the water valve terminal
all right?
Is the
winding wire of the
water valve electrically
connected?
YES
NO
NONO
Is the fauct open?
Is the water
supply stopped?
Is there
any foreign material
attached to the water hose and
the water valve
filter?
Is the
connection of the
water valve with the water
level sensor terminal
OK?
Does the pulsator rotate?
Replace the PCB assembly.
Replace the water valve.
Securely connect the
terminal
Page 6
¥Water Stop Error
¥ Washing is started without water supply.
7-6 WASHING MACHINE
7. Troubleshooting
YES
YES
NO
NO
NO
NO
YES
YES
YES
Pull out the plug.
YES
The water supply does not stop.
Does the water supply stop?
Is there water in
the water level sensor
hose?
Is the water level
sensor hose bent?
Replace the PCB assembly.
Is the
water coming out
through the drain hose with
the operation of the
drain valve?
The water valve is defective.
* Remove the foreign material in
the water velve.
Air is leaking. Check the connection,
and apply the adhesives.
Correct the bent hose.
Remove foreign materials such as
drawn thread, hair, pin and buttons.
Check the drain valve.
YES
YES
YES
NO
NO
Connect the terminal securely.
Turn off the power, and then start again.
Is the connection
of the water level sensor
terminal OK?
Does washing continue?
Replace the PCB assembly.
Washing starts without water spply.
Page 7
¥ The pulsator does not rotate during washing.
➣ This malfunction may be caused by defective contacts of the wire harness.
SAMSUNG ELECTRONICS CO., LTD 7-7
7. Troubleshooting
YES
YES
NO
YES
NO
NO
YES
NO
YES
Replace the water level sensor.
Install the V belt correctly.
Check for a racing motor due to
excessively strong or weak tension of
the V - belt.
The pulsator does not rotate.
Does the water
supply stop after filling to the
specified level?
Does the
motor make a "woong"
sound?
Does the pulsator
operate normally?
NO
YES
YES
NO
Is the connection
of the water level sensor
terminal all right?
NO
Is water supplied?
Does the pulsator
operate normally?
Is the V belt
positioned correctly?
Replace the PCB assembly.
Replace the PCB assembly.
Now it is normal
The motor is defective.
Replace the condenser.
Connect the terminal securely.
Check the motor for short -
circuit, and replace it if
necessary.
Page 8
¥ Defective Rotation during Washing
¥ Noise Occurs during Washing.
(The following soond does not indicate any problem :
The "Sha" sound generated during the stop of the dehydration tub is the sound of the water moving by automatic
balance in the dehydration tub.)
7-8 WASHING MACHINE
7. Troubleshooting
YES
YES
NO
NO
YES
The pulsator rotates one - side.
Securely connect it.
Replace the motor.
Is the connection
of the housing all right?
Is the winding
wire on the one side of the motor
disconnected?
Replace the PCB assembly.
YES
NO
NO
Remove any foreign materials.
Noise coccurs during washing.
Does the noise
occur from the inside of the
washing tub?
NO
NO
NO
Is there noise
from the clutch?
Are there
any foreign materials
stuck between the washing net
and the pulsator?
Is the position
of the brake lever adjusted
properly?
YES
YES
YES
YES
YES
YES
Adjust the clearance of the pulsator.
Contact noise due to the
wear of motor bearing
The noise is either the contact noise inside
the clutch, or it is noise caused by the wear
and deformation of parts.
1. Check the fastening screws for the motor
and the motor pulley.
2. Check the caulking of the motor pulley.
3. Check the internal components for any
abnormality.
Noise of loosing screws
from the connection area.
Is there noise
from the motor?
Page 9
¥ Defective Dehydration
SAMSUNG ELECTRONICS CO., LTD 7-9
7. Troubleshooting
YES
NO
NO
NO
YES
YES
YES
YES
YES
NO
YES
YES
Dehydration is not effective.
(In case of drain error, dehydration
is inoperative.)
NO
Replace the drain motor.
NO
Short - circuited motor. When
the motor makes a "woong"
sound, the condenser ia
defective, or one side of the
motor windings is shorted.
Adjust the tension.
Is the water being drained?
Does the pulsator rotate?
Is the tension
of the V - belt excessively
high or low?
Change the PCB assembly.
NO
Tell the customer to close the lid.
Is the lid open?
NO
After checking,
adjust the safety switch.
Is the terminal
of the safety switch lifted up
when closing the
lid?
YES
Replace the safety switch.
Is there
continuity between
the safety switch COM and
the door terminal.
NO
One or two unbalances
automatically corrected through
the process of water supply
and washing.
(The third time causes an
"unbalance error".
Spread the laundry evenly,
and start again.)
Is the load unbalanced?
YES
NO
Is operation
of the motor alone
possible?
Replace the PCB assembly.
NO
Any operating
sound from the drain motor
heard?
YES
Is the
drain motor electrically
connected?
YES
Is operation of
the drain motor alone
possible?
This is normal : A three
minute water crwn occurs
before dehydration.
The clutch is defective.
Repair it.
The drain motor is
short - circuited.
Page 10
¥ Draining Water is not Possible.
7-10 WASHING MACHINE
7. Troubleshooting
YES
YES
NO
NO
NO
YES
YES
YES
YES
NO
Water cannot drain.
NO
The drain motor is shorted.
Lower the hose.
YES
Correct the hose.
Securely connect it.
Replace the drain motor.
NO
Is the drain hose lowered?
Is the drain hose bent?
Now it is normal.
YES
Any there
operating sounds from the
drain motor?
NO
Securely connect it
Is the
wire connecting the
drain valve and the drain
motor dropped
out?
NO
Is the
outlet of the drain hose
clogged?
NO
Has there drawn
thread, or the like attached to
the drain valve?
NO
Is there any foreign
material attached to the
drain outlet?
Replace the PCB assembly.
YES
Is the
drain motor electrically
connected?
YES
Is operation
of the drain motor alone
possible?
YES
Is the wire
connection secure?
Pull out the spin basket.
Remove the foreign material
completely.
Press the Start/Hold button 3 to
4 times during the drain and
dehydration cycles.
Page 11
¥ No draining. (With PUMP MODEL)
7-4-4 Inspection After Repair
Inspection Item Description
Check grounding Check that the original grounding wire of the washing machine is securely grounded.
Connection of the grounding wire? wire to a gas or water pipe made of vinyl chloride is
very dangerous.
Check the safety Check the operation of the brake. If the following braking times are exceeded, readjust
system or repair the brake system.
Dressing the lead wires Tie the lead wires with a separate wire to prevent them from scattering.
Check that they are securely connected.
Check the locking nuts and screws Check that the nuts and screws are securely locked, and be sure to apply screw lock.
Check inside the washing machine Check for any vinyl wires, screws, or foreign materials inside the washing machine.
Check for oil (lubricant) or In particular, check the surrounding areas of driving units for oil (lubricant) leakage, and
water leakage check the moving parts of the drain valve for water leakage.
Checking the connection of the Check the power cord, plug, and receptacle for any damage. Make sure they comply
power cord with the working voltage.
Adjustment of horizontal level Adjust the height of the two adjusting legs (front of the washing machine) so that
of the washing machine the washing machine is horizontally level.
Load Braking Time
No load Below 7 seconds
Rated load (5.0/5.5kg) Below 10 seconds
SAMSUNG ELECTRONICS CO., LTD 7-11
7. Troubleshooting
NO
NO
NO
YES
YES
No draining.
Is there any
operating sound of
Pump - Drain?
Does the motor
drain operate?
Connect it firmly.
Fault on PCB assembly.
Relace it.
Fault on Pump - Drain.
Replace it.
Is the wire connection
of pump OK?
YES
Remove the foreign matercal
from the Filter - Case.
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