Fast Track Troubleshooting
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 acceptablein 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.
Publication # DrWF405ATP Production Date 5/1/13
Model:
WF405ATP**
Support Information:
HELP: 1-888-751-4086 (Tech Sup. – ASC/SSD)
1-866-894-0637 (Tech Sup. - FE/ME)
GSPN: http://service.samsungportal.com/EP/web/portal/jsp/EP_Default1.jsp
PLUS ONE: http://my.plus1solutions.net/clientPortals/samsung
Bulletins:
**Quick Test Mode**
Water valve,motor,door ,drain pump, LEDs, Soft Ver.
How to Enter: -- Press Soil Level Key, Signal Key
and Power Key at the same Time.
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 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
Water Test
- Signal : Drain/Bubble Pump Test
**Service Mode**
Verify operations and troubleshoot, Check Error codes
How to Enter/Exit: -- Press Extra Rinse Key, Signal
Key at the same time for 3 Seconds
**EEPROM Clear Check**
All Memory will be cleared including Fault codes
How to Enter: * With the Power off*
-Press Delay Start Key, and Power Key at the same
time. Good = Good , Fail = Fail
In Service mode Press:
-Pre wash + Soil level for 3sec: to start Quick Spin Test
- Signal: To Check Cycle Count
- Soil level: To Check Software Version
-Extra Rinse: To enter Board Input test -Move Jog dial to
check LED
***Diagnostic code check***
1. Activate the Service Mode first.
2. Press the “Spin key” key to start Diagnostic Code
Check Mode Code “d” will start flashing.
3. To cycle through the diagnostic codes (d1,d2,d3~d9),
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 diagnostic codes from the latest
(d1).
5. When turning it in the opposite direction, it shows the
diagnostic codes in the reverse order. Ex) When it
stops at d5 and turns backward, it shows from d4
down to “d”. Refer to Diagnostic Code.
