Samsung WF350AN Series Operating instructions

Fast Track Troubleshooting
Model: WF350AN*/XAA
Publication # nwWF350 Revision Date 06/17/2013
Quick Test Mode:
Note: This test erases all faults and memory:
To enter press Soil, Signal, & Power
simultaneously with the power off.
1. All LED’s light up and the washer beeps as it
enters the Quick Test Mode.
2. The unit displays the software version.
3. After the displaying the software version, turn
Jog dial CCW until version disappears.
Press Spin to test Door Lock/Unlock circuit.
Press Temp Key (with door locked) to cycle through
the Water Valves circuit test in this order: Pre, Bleach,
Cold Main, Hot, Steam then off.
Press Soil Key to test the Heater
Press Signal Key to test the Pump
Service Mode:
This mode allows more detailed operation tests and trou-
bleshooting, to enter press Signal & Delay Start simulta-
neously with the power on.
While in Service Mode (the Service Mode can be entered
while the unit is in a wash cycle) the following tests can
be performed:
Quick Spin Test = Delay Start & Pre Wash: This acceler-
ates the drum motor from 0 to maximum RPM over a few
minutes. Press the Start/Pause button during the test to hold
its spinning speed up to 10 min. before going back to Quick
Spin Test Mode, return to spin with Delay Start & Pre Wash.
Cycle Count = Press the Signal button to see how many
times the unit was used.
Soft Ware # = Press the Soil Level button to see the software
version information.
Fault Code Test = Press the Pure Cycle button to view the
stored fault codes – then turn Dial to view error codes (Push
Start/Pause while the code is displayed to view the number of
cycles since the error occurred, push Start/Pause again to get
back to faults)
Peripheral (Main PCB) input Tests, enter Service Mode &
press Spin key.
1. Turn the Dial so that the Steam LED is turned on. Next,
press the Start/Pause Key. Temperature will be displayed in
Fahrenheit .
2. Turn the Dial so that the Cold/Cold LED is turned on. Next,
press the Start/Pause Key. The door switch status will be dis-
played (CL if Closed, OP if Open).
3. Turn the Dial so that the No Spin LED is turned on. Next,
press the Start/Pause Key. The door lock Switch status will be
displayed (UL if unlocked, LO if locked).
4. Water Frequency/Water Sensor Testing Select a cycle &
start the washer, enter Service Mode & press Spin Key.
Turn the Dial so that the Soil Level LED is turned on. Next,
press the Start/Pause Key. The Water Frequency will be dis-
played. The frequency will change as the unit fills
IMPORTANT SAFETY NOTICE – “For Technicians Only” This service data sheet is
intended for use by persons having electrical, electronic, and mechanical experience
and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
Spin Only option:
Power on, Press and hold Spin until display changes.
Press Spin to select spin time.
Press Start/Pause to start cycle, Normal Cycle 10/12
minutes, Heavy Duty Cycle 11/13 minutes, Delicate
Cycle 8 minute. Spin speed varies with cycle.
EEPROM Clear Check
Power off, Press Delay Start, Signal and Power Key at
the same time. Good = Good Fail = FAiL
All memory will be cleared, including Fault Codes
This should be done when a new Main PCB is installed
Fabric Softener Dispenser Test:
Start Rinse and Spin Cycle. After fill is completed
remove detergent drawer, place towel below opening
and within 3 minutes the dispenser will activate
SUPPORT INFORMATION
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Help — GSPN http://service.samsungportal.com/
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Customer information videos and chat programs. Programs for Fridges, Laundry, Ranges & D/W
Please Note: There are version
changes on this model, verify you
are ordering the correct parts.

Washer Connector Checks WF350
CN2
1 AC Pwr (Blk)
2 Power off Detection (Yel)
3 Door Lock Detection (Brn)
Water Level Sensor Check Test 1 Test 2
Voltage: Connector CN 7 Pin 6 (Pink) and Pin 5
(Orange) And Connector CN 7 Pin 7 (Violet) and
Pin 5 (Orange)
Resistance: Connector CN 7 Pin 6 (Pink) and Pin 7
(Violet)
Operating voltage at no water in the
drum-2.5VDC
Operating Resistance (Power
off)
Pin 6 (Pink) and Pin 7 (Violet)
22- 24Ω
Hall Sensor Check Test 1 Test 2
Connector CN6 Pin 4 (Orange) and Pin 2 (Red)
additionally Pin 4 (Orange) and Pin 3 (blue)
Manually spin the drum to see the volt-
age change, Power On. 0Vdc or
3.75Vdc
N/A
Motor Check Test 1 Test 2
Connector CN5 Pin 1 (Blue), Pin 2 (White) and Pin
3 (Red)
Power Off 11.5Ωacross Pins 1-2,
Pins 1-3, & Pins 2-3
N/A
CN5
1 Motor Pwr U Phase (Blu)
2 Motor Pwr V Phase (Wht)
3 Motor Pwr W Phase (Red)
CN3
1 Door Close (Blk)
2 Door Open (Wht)
3 Drain Pump (Vio)
4 Steam Valve (Red)
5 Bleach Valve (Pnk)
6 Pre Valve (Yel)
7 Main Cold Valve (Blu)
8 Hot Valve (Org)
CN6 (Hall Sensor)
1 +5 vdc (Pnk)
2 Sensor Signal (Red)
3 Sensor Signal (Blu)
4 Ground (Org)
CN8
PCB Sub (Display)
CN7
4 Water Temp Thermistor (Wht)
5 Water Temp Thermistor Gnd. (Org)
6 Water Level Sensor (Pnk)
7 Water Level Sensor (Vio)
Main Relay
1 AC Pwr N (Blu)
2 AC Pwr (Wht)
Heater Relay
1 AC Pwr L1 (Blk)
2 AC Heater (Red)
CN1
1 Reactor (Gry)
2 Reactor (Gry)
Steam Relay
1 AC Pwr L1 (Blk)
2 AC Heater (Org)
CN4
1-3 Door Ck Sw(Org-Gry)

Error Type Error Mode Details
LED LCD
Water Level Sensor
LE
8
Check the Hose where the sensor is connected, may be loose,
pinched, damaged or clogged. Also check the sensor it may be
disconnected or defective. The Main PCB may also be defective
Motor Drive Error or
Hall Sensor error
3E
Check the motor drive connector, it may be loose. The hall sensor
may be disconnected, loose or damaged . Check for a foreign ob-
ject inside the motor or motor damage. The stator might be loose
or damaged. The drum might be overloaded from too many
clothes or the relay or PCB might be defective.
E3
bE
25
Water Supply
Error
nF
3
Check the water valve wiring harness.
Check whether the water supply valve is clogged with foreign ma-
terial and whether water is supplied properly.
Check for reversed fill hoses
Check water temperature, if sensed as higher than 50 ˚C in the
Wool or Lingerie cycle it will create error.
Check the relays, if they operate correctly replace the Main PCB.
Fill Hoses Reversed nF1 Correct Hot/Cold hose connections
System Error SF1
SF2
SF3
Replace PCB
Water Level Sensor 1E Water Level Sensor Trouble, Signal out of range
Door Lock Check Test 1 Test 2
Connector CN2 Pin 3 (Brown) and CN3 Pin 1
(Black)
When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds.
With Power Off, the resistance
between CN3 Pin 1 (Blk) and Main
Relay pin 2 (Blu) will be between
47 - 57Ω
Door Unlock Check Test 1 Test 2
Connector CN 2 Pin 3 (Brown) and CN3 Pin 2
(White)
When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds.
With Power Off, the resistance
between CN3 Pin 2 (Wht) and Main
Relay pin 2 (Blu) will be between
47 - 57Ω
Drain Motor Check Test 1 Test 2
Connector CN2 Pin 3 (Brown) and CN3 Pin 3
(Violet)
120VAC with the pump On and 0VAC
with the pump off
With Power Off, the resistance
between CN3 Pin 3 (Vio) and Main
Relay pin 2 (Blu) the resistance
should be 13.9Ω
Water Valve Check Test 1 Test 2
Connector CN2 Pin 3 (Brown) to CN3 Pin 5 (Pink),
Pin 4 (Red) , Pin 7 (Yellow), Pin 8 (Blue), Pin 9
(Orange)
120VAC with the Valve On and 0VAC
with the Valve off
Power Off, valve resistance is from
1202Ω- 1245Ω
Heater Relay Check Test 1 Test 2
Connector CN2 Pin 3 (Brown) and Heater Relay
Pin 2 (Red)
120VAC with the Heater On and 0VAC
with the Heater off
Power Off, heater resistance is
16.6 Ω
Steam Heater Relay Check Test 1 Test 2
Connector CN2 Pin 3 (Brown) and Heater Relay
Pin 1 (Orange)
120VAC with the Heater On and 0VAC
with the Heater off
Power Off, heater resistance is
15.6 Ω

Error Type Error Mode Details
LED LCD
Drain Error
nD
1
Check for Foreign material entering the pump or hoses.
Check to make sure the wiring harness is connected properly.
Check the water pump terminal .
Check for freezing
Power Error
2E
91
92
Make sure to check the operating voltage. (An error occurs when
under or over voltage is supplied.) Check whether a plug recepta-
cle is used. When the connecting wires are too small (extension
cord use), a momentary low voltage may drop up to 10 V
Main PBA fault (sometimes)
PF Momentary Power Failure
Communica-
tion Error
AE Check the wire connections and terminal contacts between the sub
and main PBAs.
Check for disconnected wires.
Check whether the sub PCB is short circuited because of moisture.
If the main PCB’s communication circuit is faulty, replace it.
Switch Error
(Main Relay
Error)
E2
15
Check whether either the Power switch or a tact switch (any button)
is stuck down.
Check whether the service PBA holding screws are fastened too
tight pinching the contacts
If the main PBA switching IC on/off error has occurred, replace the
main PBA.
The “E2” error occurs if the main relay connections are incorrect.
Check the connections. If there is no error in the connections, re-
place the main PBA
SR
dS
22
(Before
operation)
Door Error dL
18
(During
operation)
LO
2
(Unlock
Fail)
FL
4
(Lock Fail)
Check the door switch and latch alignment .
Check the latch for damage
Check the wiring harness to the latch.
Check the door switch. Replace if faulty.
Check the main PBA door sensing circuit. Replace if faulty.
Finally verify he operation of the Main PCB
EEPROM
Fault.
11 Go to “EEPROM Clear Mode” If display shows “FAiL”, Replace Ma-
chine Control Board

When installing a washer and dryer on the first, or second
floor, do not exceed this leg adjustment height for stability.
Error Type Error Mode Details
LED LCD
Heater Error
Hr
36
(Heater
Relay)
This can be a short or a wire disconnected to the heater circuit. This
can also be problem with the tub contacting the heater or if the wa-
ter in the tub is frozen or there is no water. The error is triggered by
temperatures above 145C. If the heater has no error, this occurs
because of a PBA relay malfunction. Check the wiring harness to
the heater.
An Hr error occurs if the steam heater, is faulty, replace it.
9E1 EMC Filter issue or a noise spike from an external device
Overflow error
OE
1E
Water is supplied continually because the water level detection
does not work. - Verify the drain is working properly, the water level
detection does not work and water is supplied continually. Verify the
water valves shut off fully. Finally check the water level sensor.
Temperature
Sensor Error
29 The washing heater temperature sensor in the tub has an error.
Check the connections for the washing heater temperature sensor
connector.
Unbalance
Error
dC
10
Check the type of laundry. Check whether it may cause an unbal-
anced situation.- Educate the consumer in this case, to press
pause, reposition the load or remove a few items. Press start to
continue and complete the wash cycle.
Foaming
Detected
SUdS
Sd
SUd
This occurs when too much foaming is detected. It is also displayed
while foaming is removed. When the removal is finished, the normal
cycle proceeds. (This is one of the normal operations. It is an error
for preventing non-sensing faults.)
Check whether the washing machine is level to the floor with respect to the original position of the washing machine prior
to service. Doing this now will reduce the need for a redo call and customer dissatisfaction.
✔ Vibrations can shorten the lifetime of the product.
Silver Care Kit
(Silver Care
PCB) Failure.
7E Check Silver Care PCB ,Main PCB & Wire-harness
Mems or Har-
ness Failure
8E Check MEMS PCB ,Main PCB & Wire-harness
Location considerations
Do not install your washer in areas
where water may freeze, since
your washer will always maintain
some water in its water valve,
pump, and hose areas. This can
cause damage the belts, the
pump, hoses and other compo-
nents. Operating temperature
should be above 60°F/16°C.

Water valve connections for the Detergent Drawer
Items Packed With Washer
BOLT-SPANER (10-13mm Wrench) DC60-40146A
ASSY HOSE WATER Cold DC97-15692A
ASSY HOSE WATER Hot DC97-156491A
CAP-FIXER DC67-00307A
HOSE-HANGER DC62-10278A
When using non-HE detergents, or using too much
detergent for the water hardness and soil level of
the clothing, over sudsing will occur. When this
happens there will be leaks out of the detergent
drawer and door. Please advise consumer of
proper detergent usage.
It is normal for some water to remain in Detergent Drawer after it
completes washing. Bleach is usually flushed out into the tub at
the beginning of the washing. Also, its compartment is washed
again during the following rinse cycle, removing any remnants.
NOTICE
The unit sometimes will pause during Sanitize, or Pure Cycle, wash modes and appear not to be functional. The Sani-
tize and Pure Cycle wash cycles have target temperatures to assure washer performance. If the water temperature
doesn't meet the target temperature during the wash cycle, the washer will automatically add extra time to allow the
heater to bring the water up to the programmed, or target temperature. In this stage, the displayed time will pause and
hold until the heating operation has been completed. It is at this point that the customer may feel that operation has
stopped. (The maximum added programmed time is 30 minutes)