Samsung WF42H5100 Operating instructions

Fast Track Troubleshooting
Model: WF42H5100
Publication #Dr WF42 Production Date 10/20/14
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.
Bulletins:
Support Information:
HELP: 1-888-751-4086 (Tech Sup. – ASC/SSD) -1-866-894-0637 (Tech Sup. - FE/ME)
GSPN: http://gspn3.samsungcsportal.com/main.jsp
PLUS ONE: http://my.plus1solutions.net/clientPortals/samsung
**With the Power On**
**Test Mode** With the Power Off
SERVICE MODE:WITH POWER ON - PRESS: Soil Level + Delay End
TEST FUNCTION PRESS to Enter or Exit
1 Cycle Count Temp
2 Version Soil Level
3
Board Input Test (Move Jog
dial to check LED) (See Chart
at bottom)
Delay End
4 DIAGNOSTIC ERROR CODE
CHECK (See Below)
SPIN - Turn dial either clockwise (c.w) or
counter c.w.
5 SPIN TEST ( RPM) (ref:
NB***)
Delay End + Temp for 3sec. (To Pause: press
- START/PAUSE)
QUICK TEST MODE:WITH POWER OFF - PRESS: Spin + Soil Level + POWER
NB*** Spin Test will NOT test Hall Sensor in this mode. NOTE: ALWAYS
remember to offset counter weight when spin testing an empty machine
FACT: It is NORMAL for this unit to be unbalanced until 350-400 RPM –
counter weights will only align correctly after this RPM is reached
•Activate the SERVICE MODE first (ref: above).
•Press the SPIN key to start DIAGNOSTIC CODE check mode. “
•To cycle through the diagnostic codes (d1, d2, d3, etc.), turn the rotary cycle selector
(knob) either clockwise or counter clockwise.
•When turning the rotary selector key (knob) in one direction, it shows diagnostic codes
from the latest (d1).
•Now when turning the knob in the opposite direction it shows the diagnostic codes in the
reverse order. E.g. When it stops at “d5” and then turn backwards, it shows from “d4” to
“d”. (Refer to Diag. Code interpretation).
Service mode Option 4:
DIAGNOSTIC ERROR CODE CHECK
Use the Board input test under service mode to test water temp,
during normal wash operation.
Service mode Option 3:
Board Input Test Chart
TEST FUNCTION PRESS to Enter or Exit
1 Water Valve Test
TEMP
**Door Lock Must be Activated 1st
before running Component **
2 Door Lock SPIN
3 Heater Smart Care
4 Drain Pump /Bubble Pump SOIL
5 EEPROM MEMORY CLEAR DELAY END + POWER (with POWER OFF)
LED 1st LED is on 2nd LED is on 3rd LED on 4th LED On 5th LED on
Display Water Temp
C
Water Temp
F
Door Status
OP=Open
CL=Closed
Door lock
sw Status
UL=
unlocked
LO=Locked
Water
Frequency
Touch sensitive keys on these models make it difficult to enter. Multiple
attempts might be necessary , make sure fingers are clean and dry.

1. Check the water level sensor
frequency. Frequency should be
approx 25.5 – 26.5 when empty.
Approx 24.5 when full
2. Disconnect the connector and
check resistance Pin 1 & 2 / 2 & 3
should be OPEN, if resistance is
read between these points you
have a short replace sensor
switch. Pin 1 & 3 resistance is
normal.
1.
3.
2.

Note: Some errors do not display or get recorded to
memory until running a cycle 3 times!
( Drain pump will run for 3mins but stops, screen
remains on but washing does not continue ) If this is
happening press start to run again, during the 3rd
attempt the error will display on the screen and get
recorded to memory.

Additional Error codes
Sd

Main PCB

Motor
Connector
Communication
Connector
Hall Sensor
Connector
Step 1: Put your black lead on the stator motor CN6 Pin1 and Red lead measure CN2 pin 1- 2 -3 -4 all
measurements should be approx 4.6.
Step 2: Put your black lead on the stator motor CN6 Pin 1 and Red lead measure CN1 pin 1-2-3 all
measurements should be approx 4.6.
Step 3: Move the black lead to CN6 Pin2 and repeat steps above.
Step 4: Move the black lead to CN6 Pin3 and repeat steps above.
All measurements should be around 4.6 ohms.
Checking the Inverter Board Test 1