Samsung WA5471 Technical information

WASHING MACHINE
Technical Information
Models : WA5471*
WA5451*
• Due to possibility of personal injury or property damage, always contact an authorized
technician for servicing or repair of this unit.
• Refer to Service Manual for detailed installation, operating, testing, troubleshooting, and
disassembly instructions.
CAUTION
All safety information must be followed as provided in Service Manual.
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Code No. : DC68-03051A-01_EN
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
GENERAL ERROR FUNCTION
NO
Error Code
(Diagnostic Code
Error Image)
1
nd
The water level fails to drop below the Go to “ Will Not Drain” Troubleshooting
Reset Water Level within 30 minutes. Section.
2
LO
Door fails to Unlock After 7 attempts.
3
nF
When the filling Continues for more
Go to “ No Water Fill” Troubleshooting
than 60 minutes or there is no change
Section.
of water level for 6 minutes.
4
FL
Door fails to lock after 7 attempts.
Go to “ Will Not Lock” Troubleshooting
Section.
5
LE
A water level lower than the Reset
water level is detected for 5 seconds
during the Wash/Rinse cycle.
Go to “No Water Fill” Troubleshooting
Section.
1E
Water Level Sensor Trouble. (When
the input signal from the water level
sensor is out of range, the unit will
send out beeping sounds and halts
the cycle.)
Go to “No Water Fill”
Troubleshooting Section
7
OE
A fault is detected in the water level
sensor. Data (frequency) shows the
water level is at or above the overflow
First check to see that all of water
water level. (When this condition
valves are not stuck. If water valves
is detected, the machine will
are OK, check water level.
automatically starts draining water
until the water level falls below the
reset water level)
8
dc
Unbalance or cabinet bump is
detected during final spin
9
E2
Jammed Key.(When key input signals Check all of keys. If A key is sensed
are coming out for more than 30
to be pressed, all keys will do not
seconds, it is regarded as a jam.)
respond.
10
ds
Door is detected as open while it is
trying to lock the door.
6
Description
Corrective Action
Go to “ Will Not Unlock”
Troubleshooting Section.
Go to “Wet Clothes” Troubleshooting
Section.
Go to “Quick Test Mode” and then do
Door Lock/Unlock Test
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
NO
Error Code
(Diagnostic Code
Error Image)
11
TE1
This occurs when the water
temperature sensor fault is detected
continuously for 5 seconds.
Go to “ Board Input Test” and check
Water Temperature. Check loose
or pinched wires. Replace PCB or
thermistor.
12
3E
MICOM is attempting to drive the motor
but is not getting any response signals
from the hall sensor. Visual check shows
motor is not running. (Locked, Defective
Hall Sensor or Overload)
Evaluate wire harness for loose or
unhooked connections. Go to “ Quick
Test Mode” and test Motor.
13
HE
Heater Relay Failure (No Heater Relay
Replace PCB
Check Signal)
14
nF1
The hot/cold water hose connection is Please connect the hot/cold water
not correct.
hose connection correctly.
15
SUd
Suds is detected during the washing
session. (“SUdS” is not an error. When
it finishes washing, End and the SUd
code will blink in turn.)
16
AE
Communication error between SUB
PBA and MAIN PBA
17
18
19
Description
This error occurs when the position of
the clutch is not detected.
- If the position detection signal is not
received 15 seconds after the clutch
PE
motor starts, the spin drum is shaken
(Clutch Motor Error) left and right and then the motor is
restarted.
If the motor position signal is not
received even after 3 reattempts, a PE
error occurs.
After the completion of the clutch
position detection, and the clutch
hall signal is invalid, the spin drum
is shaken left and right and then the
PE1
clutch hall signal is evaluated again.
(clutch hall sensor This, if the clutch hall signal is still
invalid, the clutch position switching
error)
status is checked and then the
operation is restarted.
(If the 15 reattempts fail, this error
occurs.)
8E
If the output from the MEMS sensor
is over 4.5V or under 0.5V and it
continues for 5 seconds, this error
occurs.
Corrective Action
Guide a user to reduce amount of
detergent usage.
Check Main PBA, SUB PBA & Wireharness. Replace PCB
1. Check the clutch motor.
2. Check the assembly status of the
clutch motor.
3. Check the wire connector terminals.
1. Check the clutch hall sensor.
2. Check the wire connector terminals.
3. Check the clutch switching status.
- Check the coupling assembly and
disassembly status.
1. Check the MEMS sensor and PBA.
2. Check the wire connector terminals
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
TEST MODE
Test Mode:
Each Test Mode for the ORCA is as follows in the
coming pages. The test modes indicated by the
red arrows are modes unable to get an access
once the washing cycle has started due to safety
resons.
Quick Test Mode
Definition of Quick Test Mode:
- Check operation of all LED’s (Verify faulty LED).
- Check model and software version.
- Check different operating modes (e.g. water valve, motor, door, drain pump, etc.).
How to Enter:
- Plug in the unit.
- Press spin key, soil level key and Power Key at the same Time.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Quick Test Mode:
1. A
ll LED’s light up and it sends out Beep Sound when it
enters into the Quick Test Mode. (Including 7-Segment)
2.Displays software version for a sec and Clear EEprom.
3. When the version is displayed, turn the Jog-Dial so that
the version disappears. Press the following keys to test the
various components.
- Temp Key : Water Valve Test
- Signal : Door Lock/Unlock Test
- Soil Key : Water Heater Test
- Spin : Drain / circulation pump test
EEPROM Clear Check
Definition of EEPROM Clear Mode:
- EEPROM initialization.
- All course/option settings are to be reset to default
values after EEPROM initialization.
- When Service arises and it needs PCB replacement,
EEPROM should be reset.
How to Enter:
- The unit needs to be on.
- Press Delay Start Key, and Power Key at the same
time.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Continuous Run Mode
Definition of Continuous Run Mode:
- Will continuously repeat the current cycle until the Continuous Run Mode is cancelled.
How to Enter:
- Press Delay Start + Soil Level Key together for 7 sec.
Continuous Run Mode:
1.Press Delay Start + Soil Level Key for 7 sec during Power On State (Normal User Mode) .
2.Once in Continuous Run Mode, The seven segments will no longer display “0000” and will alternate
between displaying the number of cycles of the completed course and the remaining time of the course.
3.The Continuous Run Mode will repeat the previous cycle until continuous run mode is cancelled.
4.During Continuous Run Mode, press Delay Start + Soil Level Key for 7 sec to return to normal
user mode. The seven segments will no longer display the number of cycles and will display the
maintenance time only.
5.If you exit Service Mode after entering it from Continuous Mode, the washing machine returns
to Continuous Mode.
6.If power is lost in Continuous Run Mode (that is, when the power plug is disconnected or the
Power key is pressed turning the washing machine off ), the mode is released when the washing
machine is turned on again.
Service Mode
Definition of Service Mode:
- Service Mode enables service technicians to verify the operation of the washing machine and
do troubleshooting.
- Service Mode can be entered during all washing cycle without interrupting the cycle except
some of test modes.
- Various tests can be done with Service Mode. So, troubleshooting can be done based on the
resulting diagnostic codes.
How to Enter:
- To enter the Service Mode, press the Signal and Extra Rinse Keys for 3 seconds or until the unit
sends out beeping sounds.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Service Mode
Service Mode:
1.The washer must be on to go into the Service Mode.
2.The motor speed will be displayed when started (It displays 0 when the motor does not spin).
3.The present state of the machine will not be changed.
(i.e., the current cycle in progress will not be interrupted and only the display will change)
4.To exit Service Mode, press Signal and Extra Rinse Keys for 3 second again, or Power Key.If no key
is operated during Service Mode for 5 minutes, the machine will return to normal user mode.
Quick Spin Test Mode
Definition of Quick Spin Test Mode:
- Quick Spin Test Mode is to do Spin Check. (High RPM)
How to Enter:
- During Service Mode, press the Delay Start and Temp. Keys for 3 seconds to enter Quick Spin
Test Mode.
- Cannot enter once the washing cycle has started.
Quick Spin Test Mode:
As it enters into the Quick Spin Test Mode, it starts spinning and reaches to its maximum RPM.
Once the Spin speed reaches the maximum RPM, the speed drops immediately.
To hold Quick Spin Test Mode (entering Hold Speed Mode), press the Start/Pause button. If the
Start/Pause button is pressed during Quick Spin Test Mode, it will stop accelerating and hold its
spinning speed for 10 minutes before going back to Quick Spin Test Mode.
Also, to cancel the hold and allow Quick Spin Test Mode to continue, press the Delay Start and
Temp Keys together for 3 seconds.
If you hold down the Delay Start and Temp. keys for three (3) seconds when the washing machine
is not in Hold Speed Mode, Quick Spin Mode is exited and Service Mode is restored.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Cycle Count Check Mode
Definition of Cycle Count Check Mode:
- Cycle Count Check Mode is to tally up the number of washings.
How to Enter:
- To enter the Cycle Count Check Mode, press the Signal Key during Service Mode.
Cycle Count Check Mode:
1.Activate the Service Mode in advance.
2.When the Signal key is pressed, the total number of washings will light up and a signal LED will
glow.
3.The maximum number of cycles will be 1999.
The counter will roll over to 0 and start counting again after 1999.
4.The counting will be carried out at the end of the normal cycle.
(For normal and Continuous Run cycles, the count is carried out at the end of the cycles.
5.To exit the Cycle Count Check Mode, press the “Signal” key again.
S/W Version Check Mode
Definition of S/W Version Check Mode:
- S/W Version Check Mode is to bring up S/W Version information.
How to Enter:
- To enter the S/W Version Check Mode, press the Soil Level Key during Service Mode.
S/W Version Check Mode:
1.Activate the Service Mode in advance.
2.Press the Soil Level Key to bring up its software Version
EX) Generate dE49 at Version 49 (dE is Micom code, 49 is it’s software version)
3.To exit the S/W Version Check Mode, press the Soil Level S/W once again.
Then, it returns to the Service Mode with motor RPM illuminating.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Fast Time Down Test Mode
Definition of Fast Time Down Test Mode:
- Fast Time Down Test Mode is to forward the program to the next cycle stage.
How to Enter:
- To enter the Fast Time Down Test Mode, press the Temp key during Service Mode.
Fast Time Down Test Mode:
1.Activate the Service Mode in advance.
2.To forward the program to the next cycle stage, press the Temp key.
Each stage is located at key points of a complete cycle as follows:
- End of Each Fill (Beginning of Wash or Rinse Tumble Session)
Caution: Check if the current water level is higher than the Reset water level and then perform
the Fast time down test.
- Beginning of Drain Session
- Beginning of Spin Session (Here, it checks the water level. So, if it is over the reset level, it carries
out draining before the spinning.)
- Beginning of Fill Session
- Beginning of Bleach Fill
- Beginning of Fabric Softener Fill
- Every 3 minutes during Wash and Rinse Tumble Session
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Board Input Test Mode
Definition of Board Input Test Mode:
- Board Input Test Mode is to displays a specified input after a key press.
How to Enter:
- To enter the Board Input Test Mode, press the Extra Rinse key during Service Mode.
Board Input Test Mode:
1.Activate the Service Mode first.
2.Press the key to start Board Input Test.
3.Turn the Jog-Dial so that the normal course is turned on, and The Water Temperature will be
displayed in Celsius.
4.Turn the Jog-Dial so that the Heavy duty cycle is turned on, The Water Temperature will be
displayed in Fahrenheit.
5.Turn the Jog-Dial so that the Perm Press cycle is turned on, The door status will be displayed (OP
if open, CL if closed).
6.Turn the Jog-Dial so that the Rinse+Spin or Quick Wash is turned on, The Door Lock Switch
status will be displayed (UL if unlocked, LO if locked).
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Diagnostic Code Check Mode
Service Mode
Spin
Diagnostic Code
Definition of Diagnostic Code Check Mode:
- Diagnostic Code Check Mode is to bring up the stored diagnostic codes (refere codes for service
technicians).
How to Enter:
- To enter the Diagnostic Code Check Mode with code “d” flashing, press the Spin key during
Service Mode.
Board Input Test Mode:
1.Activate the Service Mode first.
2.Press the “Spin key” key to start Error Code Check Mode with Code “d” flashing.
3.To cycle through the error codes, turn the Rotary Cycle Selector in one direction (either
Clockwise or Counterclockwise).
4.Now, when turning the Rotary Selector Key in the same direction, it shows error codes from the
latest.
5.When turning it in the opposite direction, it shows the error codes in the reverse order.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Demo Mode
- Demo mode is entered when the Pure Cycle + Extra Rinse buttons are held down for five (5)
seconds simultaneously in the power on state.
- When entering Demo mode, the buzzer rings three (3) times and “- - - -” is displayed on the 7
segment display and all other LEDs are turned off. (Initial Demo mode)
- Demo mode consists of WASH, SPIN and LED modes.
- If the Temp button is pressed during the initial Demo mode, “WASH” blinks on the 7 segment
display and the washing machine enters WASH mode.
- If the Start/Pause button is pressed in WASH mode, the door is locked (Door Lock) and the motor
rotates left and right at 45 RPM in a 7 sec on and 3-sec off cycle.
- WASH mode continues up to five (5) minutes once started. After the five (5) minutes have
elapsed, “- - - -” is displayed on the 7 segment display and the initial Demo mode is maintained.
- If the Start/Pause button is pressed during a WASH mode operation, “- - - -” is displayed on the 7
segment display and the initial Demo mode is maintained.
- If the Spin button is pressed in the initial Demo mode, “Spin” blinks on the 7 segment display
and the washing machine enters SPIN mode.
- If the Start/Pause button is pressed in the SPIN mode, the door is locked (Door Lock) and a spin
is operated at 1030 RPM. When the speed reaches 0 RPM, the No Spin, Low, Medium, High, and
Extra High LEDs are turned on.
- During a spin operation, the No Spin LED turns on when the speed is lower than 400 RPM. The
Low LED turns on between 400 RPM and 700 RPM. The Medium LED turns on between 700 RPM
and 900 RPM. The High LED turns on between 900 RPM and 1030 RPM. All spin speed LED turn
off more than 1030 RPM.
- SPIN mode continues up to four (4) minutes once started. After the four (4) minutes have
elapsed, “- - - -” is displayed on the 7 segment display and the initial Demo mode is maintained.
- If the Start/Pause button is pressed during a SPIN mode operation, “- - - -” is displayed on the 7
segment display and the initial Demo mode is maintained.
- If the Start/Pause button is pressed in LED mode, all LEDs are turned on. The LED mode
continues up to thirty (30) seconds once started. After the thirty (30) seconds have elapsed, “- - -” is displayed on the 7 segment display and the initial Demo mode is entered.
- If the Start/Pause button is pressed during an LED mode operation, “- - - -” is displayed on the 7
segment display and the initial Demo mode is entered.
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
TROUBLE DIAGNOSIS
- As the micom wash machine is configured of the complicate structure, there might be the
service call.
Below information is prepared for exact trouble diagnosis and suitable repair guide.
Caution for the Repair and Replacement
Please follow below instruction for the trouble diagnosis and parts replacement.
1)As some electronic components are damaged by the charged static electricity from the resin
part of machine or the human body, prepare the human body earth or remove the potential
difference of the human body and machine by contacting the power supply plug when the
work contacting to PCB is executed.
2)Since AC120V is applied to the triac T1 and T2 on P.C.B, the electric shock may occur by touching
and be careful that the strong and weak electricity are mixed.
3)As the P.C.B assembly is designed for no trouble, do not replace the P.C.B assembly by the wrong
diagnosis and follow the procedure of the trouble diagnosis when the micom is not operated
normally.
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
TROUBLE DIAGNOSIS
Will Not Start
• Plug the unit into the wall outlet. Check for proper voltage.
• Check fuse or reset circuit breaker.
• Push any key to turn on the washer and press the Start/Pause key to run the washer.
• Close door and push the Start/Pause key to run the washer.
• Check if washer is in a pause, soak or suds process. Wait briefly and it may start. (If the washer is in suds
period, Suds will light up instead of remaining time.)
• Check for restricted drain system. (If there is electrical problem in drain system, “nd” error will occur after 30
minutes.)
• Check Water Supply.
• Check the line or water valve screen filter.
• Check if PCB connectors are assembled properly.
• Check if CN2 terminals on PCB are in good condition. (Refer to PCB Connector Check.)
• Replace PCB.
Leaking
• Make sure inlet hose connections are not leaking. Check for rubber gasket damage due to over tightening.
• Check standpipe for leak. Wrap a dry rag around the standpipe opening. If rag becomes wet, leak is fault of home plumbing. Be sure the standpipe is capable of accepting the flow of water from the washer.
• Make sure end of drain hose is correctly inserted and secured to drain standpipe.
• Check internal hose connections (fill, drain systems, dispenser hoses & clamps).
• Check rubber boot. Remove, reposition and reinstall, if necessary.
• Check for possible kinked dispenser to outer tub hose. Hot water pressurization may force door open.
Will Not Spin
• Make sure to close the door completely.
• Check for water left inside the washer. If so, go to “Will Not Drain”.
• Perform Quick Test Mode or Quick Spin Test. Does the washer spin? (Before the test, empty the unit inside.) If it doesn’t tumble after the above, change PCB. When the problem persists, change the motor.
• Perform Quick Test Mode or Quick Spin Test. Does the washer spin? If it does, Check Possible unbalanced
load scenario in normal mode.
• Check for loose connections at PCB, Water Level Sensor, Motor, Hall Sensor Wire Harness. (CN9,CN1,CN8)
(Refer to the Component Testing Procedure.)
• Check motor windings resistance. (CN8 Pin1&3 = 11.6 ohms (at ±7% 20°C/68°F),
Pin1&2 = 11.6ohms (at ±7% 20°C),
Pin2&3 = 11.6 ohms (at ±7% 20°C))
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
TROUBLE DIAGNOSIS
No Water Fill
• Perform Quick Test Mode. Check all of Water Valves visually.
(Cold Water Valve, Bleach Water Valve, Softener dispenses using Cold & Bleach Water Valve, and Hot Water
Valve.)
• Check if water taps are turned on fully.
• Check Water Valves and Water Level Sensor (Refer to PCB Connector Check)
• Check if there is any kink in inlet hoses.
• Check if inlet screens are clogged up.
• Check if water has enough pressure. If so, find out its contributors.
• Check if there is any frozen area in the unit (Drain Hose, etc)
• Measure the resistance of Water Valve Coil.
(It should read 1.18K ohms. Check Pin#3 of CN6 and pin#1.2.3.4 of CN4)
• Check Pressure S/W and PCB for loose connections. (Refer to PCB Connector Check.)
Tub Full of Suds
• Go to “Will Not Drain” and “Will Not Spin” and check the draining.
• Check PCB and Drain Pump for any loose wire connection.
• Perform Quick Test Mode or Board Output Test to drain.
• Use HE (High-Efficiency) or low sudsing detergent specially formulated for front load washers.
• Reduce the amount of detergent for that specific load size and soil level. Keep in mind that towel creates
more suds generally.
• Reduce the amount of detergent when water is soft, or laundry is small or lightly soiled.
• Do one more washing cycle with cold water and a table spoon of salt without detergent.
Wet Clothes
• Unbalance due to not enough load. Put additional load.
• Due to excessive suds by using general detergent. Use HE (High-Efficiency) or reduce its quantity.
• Low Spin Speed or Drain Only was selected.
• Go to “ Will Not Spin”.
Will Not Lock
• Perform Quick Test Mode. Check Door Lock.
Check the reistance for door lock. if Approx 0.2 ohm between the terminal of contact (white-Red wire),
and if not, change pcb(refer to pcb connector check).
• Read Lock Switch and PCB (CN3). (Refer to PCB Connector Check.)
Will Not Unlock
• Display shows “LO”. Turn off and on the unit. If “LO” keeps illuminating, check PCB and Door Lock Switch.
• Read Lock Switch and PCB (CN3). (Refer to PCB Connector Check.)
• Perform Quick Test Mode. Check Door Lock. Check the resistance for door unlock if Approx 0.2 ohm between
the terminal of contact (white-blue wire), and if not, change pcb(refer to pcb connector check).
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
TROUBLE DIAGNOSIS
No Key Operation
• Option and Function buttons respond differently according to each cycle.
• Child Lock is being activated. To exit, hold down Spin level key and soil level key simultaneously until it sends
out a beeping sound.
• When “End“ illuminates on the display, only Power button works. Press Power button and make new cycle
selections.
Will Not Drain
• Check for any kink on the drain hose. If any, straight it out.
• Check for any restriction in the drain hose.
• Close the door and press the Start/Pause Button. For safety reasons, the washer does not tumble or spin with
the door open.
• When it is freezing outside, check if it is frozen inside the drain hose.
• Check if the water level signal input is correct. Go to Board Input Test Mode.
• Go to Quick Test Mode and do Drain Pump Test.
• Check if there is any twist in the hose (the one between Tub and Drain Pump).
• Check if it reads AC 120V at the pump when a spin cycle is selected.
• Read the winding resistance of the pump motor. (14.2±7% Ohms)
• Check the pump at Pin #3 of CN6 and pin #7 of CN4 on PCB. It should read AC 110~120V. (Refer to PCB
Connector Check)
Wrong Water Temperature
• Check if both of the water taps are fully open.
• If the water heater is located far from the washer, screw out the hot water tap and let its water pass until you
get hot water.
• Too Hot/Too Cold: Reduced amount of water is supplied while PCB controls the influx to regulate the actual
temperature of the water in the tub. This may appear to be significantly hotter/colder than expected.
• Check if the temperature selection is correct.
• Disconnect inlet hoses from the Water Valve and remove any residue in the inlet screens.
Noisy and/or Vibration/Walking
• Check if the washer is leveled and the lock nuts are tightened up on the bottom plate.
• Check if all of the shipping bolts and spacers are removed from the back panel.
• Check if load is big enough and there is no unbalance.If there is not enough load, put in a few towels to balance it.
• Check if the motor is fastened enough.
• Remove various trouble contributors (such as dust coat on the floor).
Buttons do not Respond
• Option and Function buttons respond differently according to each cycle.
• Child Lock feature has been selected. To disable feature press and hold Temp and Spin simultaneously until a
beep is heard.
• When display shows “End”, only the Power button will function. Press Power and make new cycle selections.
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TROUBLE SHOOTING
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
PROBLEM CHECKING AND METHOD OF PCB
- If you plug in the power cord and turn Power S/W on, memorized data is displayed.
If any data is not displayed, check the followings.
Thermistor Check
Check Resistance at Pin #9 and #7 of CN8
Tester Check = 47㏀
Water Sensor Check
Check Frequency at Pin #11 and #7 of CN8
Reset frequency = 25.6KHz
Check Frequency at Pin #12 and #7 of CN8
Reset frequency = 25.6KHz
Hall Sensor Check
Check Voltage at Pin #4 and #3 of CN1
Tester Check = DC0.6V
Check Voltage at Pin #4 and #2 of CN1
Tester Check = DC0.6V
Motor Check
Resistance at Pin #1 of CN8 and GND
= 280㏀
Resistance at Pin #2 of CN8 and GND
= 280㏀
Resistance at Pin #3 of CN8 and GND
= 280㏀
Drain Motor_Pump Check
Check Voltage at Pin #3 of CN6 and Pin #9 of CN4
When Drain Pump operates = AC 120V
Water Valves/ Check
Check Voltage at Pin #3 of CN6 and Pin #1,2,3,4 of CN4
When Valves operates = AC 120V
Clutch-Motor
Check Voltage at Pin #3 of CN6 and Pin #8 of CN4
When Valves operates = AC 120V
Pump
Check Voltage at Pin #3 of CN6 and Pin #7 of CN4
When Valves operates = AC 120V
Heater Relay Check
Check Voltage at Pin #1 of CN8 and Pin #1 of RY13
When Heater Relay operates = AC 120V
AC Power Check
Check Voltage at Pin #1 and #3 of CN6
Check Voltage at Pin #1 of CN6 and Pin #2 of RY13
Tester Check = AC 120V
Door Lock Check
Check Voltage at Pin #3 and #5 of CN3
When Door Lock = DC 6.5V
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WIRING DIAGRAM
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
Model : WA5471*, WA5451*
18
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WATER FLOW DIAGRAM
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
19
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