Samsung WF405ATPAWR/AA Manual

WASHING MACHINE

Technical Information

Code No. : DC68-03144A_EN

• 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.

All safety information must be followed as provided in Service Manual.

CAUTION

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 1 2012-03-02 �� 9:28:47

ALIGNMENT AND ADJUSTMENTS

GENERAL ERROR FUNCTION

NO Error

Code

Diagnostic Code

Error Image Description Corrective Action

1 nd nd

The water level fails to drop below

the Reset Water Level within 15

minutes.

Go to “ Will Not Drain”

Troubleshooting Section.

2 LO LO Door fails to Unlock After 7

attempts.

Go to “ Will Not Unlock”

Troubleshooting Section.

3 nF nF

When the lling Continues for

more than 40 minutes or there is no

change of water level for 6 minutes.

Go to “ No Water Fill”

Troubleshooting Section.

4 FL FL Door fails to lock after 7 attempts. Go to “ Will Not Lock”

Troubleshooting Section.

5 LE LE

A water level lower than the Reset

water level (25.6Khz) is detected for

5 seconds during the Wash/Rinse

cycle.

Go to “No Water Fill”

Troubleshooting Section.

6 LE(1E) LE(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 OE

A fault is detected in the water level

sensor. Data (frequency) shows

the water level is at or above the

overow water level. (When this

condition is detected, the machine

will automatically starts draining

water until the water level falls

below the overow water level)

First check to see that all of water

valves are not stuck. If water valves

are OK, check water level sensor.

8 dc dc

Unbalance or cabinet bump is

detected during nal spin, which

prevents the drum from spinning

over 140 rpm. (Never exceeds 150

RPM due to unbalanced load)

Go to “Wet Clothes”

Troubleshooting Section.

9 E2 E2

Jammed Key.(When key input

signals are coming out for more

than 30 seconds, it is regarded as

a jam.)

Check all of keys. If A key is sensed

to be pressed, all keys will do not

respond.

10 ds ds Door is detected as open while it is

trying to lock the door.

Go to “Quick Test Mode” and then

do Door Lock/Unlock Test

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 2 2012-03-02 �� 9:28:47

ALIGNMENT AND ADJUSTMENTS

NO Error

Code

Diagnostic Code

Error Image Description Corrective Action

11 tE tE

Abnormal high/low temperature or

resistance (Thermal sensor or PBA

resistance).

Go to “ Board Input Test” and check

Water Temperature. Check loose

or pinched wires. Replace PCB or

thermistor.

12 3E 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 Hr Hr This error code appears when the

heater is 96°C or above. Replace PCB

14 nF1 nF1

This error code appears when the

water temperature is 50°C or above

for 8 seconds or longer in the Wool

and Delicate course.

Please connect the hot/cold water

hose connection correctly.

15 suds suds

Suds is detected during the washing

session. (“SUdS” is not an error. If the

washer is in suds period, “SUdS” will

light up instead of remaining time.)

Guide a user to reduce amount of

detergent usage.

16 AE AE

Communication error between SUB

PBA and MAIN PBA

Check Main PBA, SUB PBA & Wire-

harness. Replace PCB

17 SF SF System Error Replace PCB

18 2E 2E Voltage for motor control bus is

over or under specied limit. Replace PCB

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 3 2012-03-02 �� 9:28:47

ALIGNMENT AND ADJUSTMENTS

TEST MODE

Test Mode:

Each Test Mode for the Potomac 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

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

Special Test Mode

Power Off State

Quick Test Mode

EEPROM Clear

Mode

Continuous Cycle

Mode

Service Mode

Demo Mode

Quick Spin Test Mode

Cycle Count Check Mode

S/W Version Check Mode

Fast Time Down Test Mode

Board Input Test Mode

Diagnostic Code

CheckMode

Power On State

(Normal User Mode)

WF405ATP-03144A_EN.indd 4 2012-03-02 �� 9:28:47

ALIGNMENT AND ADJUSTMENTS

Denition of Quick Test Mode:

- Check operation of all LED’s (Verify faulty LED).

- Check model and software version.

- Check dierent operating modes (e.g. water valve, motor, door, drain pump, etc.).

How to Enter:

- Plug in the unit.

- Press Soil Level Key + Signal Key and Power Key at the same Time.

Important. Once test mode is performed, all data including the diagnostic code saved in the

EEPROM will be erased.

Quick Test Mode:

1. All 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. (Ex. If

Machine Version is L9 and S/W Version is 49, 7-Segment will

display L949)

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

- Spin Key : Door Lock/Unlock Test

- Soil Key : Water Heater Test

- Signal Key : Drain/Bubble Pump Test

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 5 2012-03-02 �� 9:28:47

ALIGNMENT AND ADJUSTMENTS

EEPROM Clear Check

Denition 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 machine must be turned o.

Press Delay Start Key, Power Key at the same time.

Continuous Run Mode

Denition of Continuous Run Mode:

- Will continuously repeat the current cycle until the Continuous Run Mode is cancelled.

How to Enter:

- Press DelayStart + ExtraRinse together for 7 sec.

Continuous Run Mode:

1. Press

DelayStart + ExtraRinse 7 sec

during Power On State (Normal User Mode) .

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.

During Continuous Run Mode, press DelayStart + ExtraRinse 7 seconds 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 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 o), the mode is released when the washing

machine is turned on again.

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 6 2012-03-02 �� 9:28:48

ALIGNMENT AND ADJUSTMENTS

Service Mode

Denition 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 + Extra Rinse Keys for 3 seconds or until the unit

sends out beeping sounds.

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 + 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.

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 7 2012-03-02 �� 9:28:48

ALIGNMENT AND ADJUSTMENTS

Quick Spin Test Mode

Denition of Quick Spin Test Mode:

- Quick Spin Test Mode is to do Spin Check. (High RPM)

How to Enter:

- During Service Mode, press the Pre Wash + Soil Level 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 Pre Wash + Soil

Level Keys together for 3 seconds.

If you hold down the Pre Wash + Soil Level 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.

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

Pre Wash + Soil Level

3 sec

While a cycle is not running

Pre Wash + Soil Level

While it is not in Hold Speed Mode

Pre Wash + Soil Level for 3 sec or after 10 minutes

WF405ATP-03144A_EN.indd 8 2012-03-02 �� 9:28:48

ALIGNMENT AND ADJUSTMENTS

Cycle Count Check Mode

Denition 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 9999.

The counter will roll over to 0 and start counting again after 9999.

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

Denition 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 AE49 at Version 49 (AE 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.

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 9 2012-03-02 �� 9:28:49

ALIGNMENT AND ADJUSTMENTS

Fast Time Down Test Mode

Denition 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

To avoid risk of electrical shock, personal injury or death; disconnect power to washer

before servicing, unless testing requires power.

WARNING

WF405ATP-03144A_EN.indd 10 2012-03-02 �� 9:28:49

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