Samsung WF448AAP/XAA Troubleshooting Manual Download Page 1

Fast Track Troubleshooting 

Model:  WF448***/XAA           
BOM Models 
WF448AAW/XAA 
WF448AAP/XAA

 

Publication #  APWF448   Revision Date 5/16/2012

 

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  en-
ters the Quick Test Mode.

 

2. The unit displays the software version for a     sec-
ond 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, turn the Jog-Dial so 
that the version disappears. Press the following keys 
to test the various components 

 

Press 

Spin

 

to test Door Lock/Unlock circuit

 

Press 

Temp

 

to cycle through the Water Valves circuit 

test in this order: Pre-Wash, Bleach, Cold Main, Hot, & 
Steam, then off. 
Press 

Soil Level

 

to test Circulation/Drain Pump.

  

Press

 

Signal 

to test the Water/Steam Heater.

 

  

When either 

Test or Spin 

is displayed on the LCD, 

press 

Start/Pause 

to conduct the motor test.  

In 

Test mode

, you can test the clockwise and coun-

terclockwise movement of the motor. However, the 
water level must satisfy the heater water level (24300) 
to enter Test mode.

 

In 

Spin mode, 

you can test the motor at a high rpm.   

 

Service Mode: 

 

 

 

This mode allows more detailed operation tests and trouble-

shooting, to enter press 

Signal & Extra Rinse                          

simultaneously with the 

power on.

   

 

In Service Mode the following tests can be performed: 

 

Quick Spin Test:

 Press 

Delay Start & Silver Care

.  

This accel-

erates the drum motor from 0 to max RPM over a few minutes. 

Note: Stay with the washer during this test, out of balance detec-

tion is bypassed and the door may not lock

Press the 

Start/

Pause

 

 during the test to hold its spinning speed for 10 minutes 

before going back to Quick Spin Test Mode.

 

Cycle Count: 

Press the 

Signal

 

to see how many times the unit 

was used  

Soft Ware #: 

Press the 

Soil

 

to see the software version Info.

 

Fast Time Down: 

Press the 

Temp

 to advance to the next cycle

 

Fault Code Test:  

Press the 

Silver Care 

to view the stored fault 

codes  – then turn 

Jog Dial 

to view error codes. Press 

Start/

Pause

 while the code is displayed to view the number of cycles 

since the error occurred. 

 

Peripheral (Main PCB) input Tests:  

1. 

Select Extra Wash. Then turn the Jog-Dial

 

so that the 

Extra 

Rinse LED

 is turned on. Next, press 

Start/Pause

. The Water 

Temperature will be displayed in Fahrenheit. 

2. 

Select Extra Wash. Then turn Jog-Dial

 

so that the 

Extra Spin 

LED

 

is turned on. Next, press  

Start/Pause

. The door status will 

be displayed (OP if open, CL if closed). 

3. 

Select Extra Wash. Then turn the Jog-Dial

 

so that the 

Delay 

Start LED

 is turned on. Next, press the 

Start/Pause

. The door 

lock Switch status will be displayed (UL if unlocked, Lo if 

locked).

 

4. 

Select Extra Wash. Then turn the Jog-Dial

 

so that the 

Pre 

Wash LED

 is turned on. Next, press the 

Start/Pause

. The Wa-

ter Frequency will be displayed.

 

5. 

Select Extra Wash. Then turn the Jog-Dial

 

so that 

My Cycle 

LED 

is turned on. Next, press 

Start/Pause

. The AG Kit status 

will be displayed after 3 seconds. (“

E” if the AG kit is abnor-

mal. “—” if the AG Kit is working properly)

 

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. 

Please Note: 

There are 

three Versions of this 
model, verify you are order-
ing the correct parts for the 
Version you are servicing. 

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

 

Caution:  Retrieve error codes from “

Service Mode

” BEFORE entering “

Quick Test Mode

” 

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