Samsung WF337AA XAA Series Operating instructions

Fast Track Troubleshooting
Model: WF337AA*/XAA
Publication # nwWF337 Revision Date 06/17/2013
Quick Test Mode
To enter press Spin, Silver Care, & 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 for a
second then clears the EEprom.
3. After the displaying the software version, LCD
will display Model information. If EEEE is displayed
the PCB ass’y is defective.
4. When the version is displayed. Press the follow-
ing keys to test the various components
Press Temp Key to cycle through the Water Valves in
this order: Pre Cold, Cold Main, Bleach, Cold Main &
Bleach for Fabric Softener, Hot, then off.
Press Spin Key to test Motor circuit.
Press Soil Key to test Drain Pump
Press Silver Care to test door lock - unlock circuit
Service Mode:
This mode allows more detailed operation tests and trouble-
shooting, to enter press Signal & Extra Rinse
simultaneously with the power on.
While in Service Mode the following tests can be performed:
Quick Spin Test = Delay Start & Silver Care: This
accelerates the drum motor from 0 to maximum RPM over a
few minutes. Note: Stay with the washer during this test, out
of balance detection may be bypassed. Press the Start/Pause
button during the test to hold its spinning speed for 10 minutes
before going back to Quick Spin Test Mode.
Cycle Count = Press the Signal button to see how many times
the unit was used
Soft Ware # = Press the Soil button to see the software version
information
Fast Time Down = Press the Temp button to advance to the
next cycle
Fault Code Test = Press the Silver Care 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)
Peripheral (Main PCB) input Tests
1. Extra Wash. Then turn the Dial so that the Normal LED is
turned on. Next, press the Start/Pause Key. The Water Tem-
perature will be displayed in Fahrenheit.
2. Extra Wash. Then turn the Dial so that the Whites LED is
turned on. Next, press the Start/Pause Key. The door status will
be displayed (OP if open, CL if closed).
3. Extra Wash. Then turn the Dial so that the Perm Press 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. Extra Wash. Then turn the Dial so that the Sanitize LED
is turned on. Next, press the Start/Pause Key it will display the
Ag Kit Status in 3 seconds: “- -” if AG kit is operated properly.
“7E” if AG kit is out of order (check wire harness & PCB)
5. Water Frequency/Water Sensor Testing Select a cycle &
start the washer, enter Service Mode & press Extra Wash.
Turn the Dial so that the Quick Wash 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.
Selecting Language
1. The “Select the Language” message appears.
2. Turn the Dial to select language
3. Press Signal button to select
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
SUPPORT INFORMATION
Training — Plus One http://my.plus1solutions.net/clientPortals/samsung/
Help — GSPN http://service.samsungportal.com/
Samsung Product Support TV http://support-us.samsung.com/spstv/howto.jsp
Customer information videos and chat programs. Programs for Fridges, Laundry, Ranges & D/W
Bulletin: There is a part Change
on the Water Hose Ass’y

WF337

RY9 Washer Heater Relay
1 Heater (Red)
2 (N) (Wht)
CN9
1 Motor Pwr U Phase (Blu)
2 Motor Pwr V Phase (Wht)
3 Motor Pwr W Phase (Red)
CN10
1 Main Valve (Blu)
2 Hot Valve (Red)
3 Pre Valve (Yel)
4 Bleach Valve (Pnk)
6 Drain Pump (Blk)
7 Door Lock Close (Sky)
8 Door Lock Open (Wht)
CN8 (Hull Sensor)
1 +5 vdc (Pnk)
2 Sensor Signal (Red)
3 Sensor Signal (Blu)
4 Ground (Org)
CN7
1 to AG pcb (Wht)
3 Door Lock & Valve common (to L)(Blk)
CN5
1 AC Pwr (N) (Wht)
3 AC Pwr (L) (Blu)
CN3
3 Water Temp Thermistor(Wht)
4 Door Sw (Brn)
6 Water Temp Thermistor Gnd. (Org)
7 Water Level Sensor (Vio)
8 Water Level Sensor (Pnk)
CN1 & CN2
PCB Sub (Display)
CN4 AG PCB
1 (Red)
2 (Blu)
3 (Wht)
4 (Grn)
5 (Pnk) Ground
Water Temperature Thermistor Check Test 1 Test 2
Connector CN 3 Pin 3 (White) and CN3 Pin 6
(Orange)
Operating voltage at Room temperature
-
Operating Resistance at Room
Temperature (Power off) discon-
nect CN3
4.2VDC (5VDC May indicate a connector
issue)
50-57kΩ
Door Switch Check Test 1 Test 2
Connector CN3 pins #6(Org) & # 4(Brn) 25VDC Door Open, 0VDC Door Closed Operating Resistance with
power off
open with door open, short with
door closed.
Water Level Sensor Check Test 1 Test 2
Voltage: Connector CN 3 pins #6(Org) & # 7(Vio)
And Connector CN 3 Pins #6(Org) & #8(Pnk)
Resistance: Connector CN 3 Pin 8 (Pink) and CN7
Pin 7 (Violet)
Operating voltage at no water in the
drum-
Operating Resistance (Power
off)
2.5VDC CN3 Pin 8 (Pink) and Pin 7
(Violet) 22- 24Ω
Hall Sensor Check Test 1 Test 2
Connector CN8 pins #4(Org) & # 2(Red) additionally
4(Org) & # 3(Blu)
Manually spin the drum to see the volt-
age change, Power On
N/A
0Vdc or 3.75Vdc
Motor Check Test 1 Test 2
Connector CN9 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
A/C Power Check Test 1 Test 2
Connector CN 5 Pins 1 (White) and 3 (Blue) Power On 120VAC N/A

Door Lock Check Test 1 Test 2
Connector CN10 Pin 7 (Sky Blue) and CN5 Pin 3
(Blue)
When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds.
With Power Off, the resistance
between these pins will be between
56 - 62Ω
Door Unlock Check Test 1 Test 2
Connector CN10 Pin 8 (White) and CN5 Pin 3
(Blue)
When Door is Locked or Unlocked
there is a pulse of 120VAC for a few
milliseconds.
With Power Off, the resistance
between these pins will be
between 56 - 62Ω
Drain Motor Check Test 1 Test 2
Connector CN10 Pin 6 (Black) and CN5 Pin 3
(Blue)
120VAC with the pump On and 0VAC
with the pump off
Power Off, the resistance should be
13.9Ω
Water Valve Check Test 1 Test 2
Connector CN5 Pin 3 (Blue) to CN10 Pin 4 (Pink),
Pin 2 (Red) , Pin 3 (Yellow), Pin 1 (Blue)
120VAC with the Valve On and 0VAC
with the Valve off
Power Off, resistance at valve is
from 1202Ω- 1245Ω
Heater Relay Check Test 1 Test 2
Connector CN5 Pin 3 (Blue) and RY9 (heater re-
lay) Pin 1 (Red)
120VAC with the Heater On and 0VAC
with the Heater off
Power Off, heater resistance is
16.6 Ω
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

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.
Foot Pad for Walking Washer, There
is one in each package, so order 4
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
E
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
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

Water valve connections for the Detergent Drawer
Laundry Touch Up Paints
Stacking Kit : (Model No : SK-3A1/XAA, SK-4A/XAA, SK-5A/XAA)
Samsung washers and dryers can be stacked to maximize usable space.
An optional stacking kit is available for purchase from your Samsung retailer
Items Packed With Washer
BOLT-SPANER (10-13mm Wrench) DC60-40146A
ASSY HOSE WATER DC97-15691A
ASSY HOSE WATER DC97-15692A
MANUAL-BOOK DC68-02535A
CAP-FIXER DC67-00307A
HOSE-HANGER DC62-10278A
When using non-HE
detergents, or using
too much detergent
for the water hard-
ness 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 con-
sumer of proper de-
tergent usage.
Valve #1 Valve #2 Valve #3 Valve #4
MAIN (C) BLEACH PRE
WASH MAIN (H)
It is normal for a small amount of water
remaining 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.
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 components.
Operating temperature
should be above 60°F.