Samsung WF393 Series User Manual

Fast Track Troubleshooting
Model: WF393**
Publication #Dr WF393 Production Date 4/29/14
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: Signal + Extra Rinse
TEST FUNCTION PRESS
1 Cycle Count SIGNAL
2 Version SOIL Level
3
Board Input Test (Move Jog
dial to check LED) (See Chart
at bottom)
Extra Rinse
4
DIAGNOSTIC ERROR CODE
CHECK (See Below)
SPIN - (“d” will start flashing) Turn dial
either clockwise (c.w) or counter c.w.
5
SPIN TEST ( RPM) (ref:
NB***)
Pre Wash + Soil Level for 3sec. (To Pause:
press - START/PAUSE)
QUICK TEST MODE: WITH POWER OFF - PRESS: SOIL + SPIN + 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. “d” will start flashing.
• 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
1 Water Valve Test
TEMP
**Door Lock Must be Activated 1
st
before running Component **
2 Door Lock SPIN
3 Heater SOIL
4 Drain Pump /Bubble Pump SIGNAL
5 EEPROM MEMORY CLEAR
DELAY START + POWER (with POWER OFF)

Samsung WF393 Series Specifications

General

Brand	Samsung
Model	WF393 Series
Category	Washer
Language	English

Summary

Troubleshooting Modes

Quick Test Mode (Power Off)

Procedure to enter and use Quick Test Mode when the appliance is powered off.

Service Mode (Power On)

Procedure to enter and use Service Mode when the appliance is powered on.

Service Mode Options

Details on Board Input Test Chart and Diagnostic Error Code Check.

Component Testing Procedures

Door Lock Switch Testing

Steps to check the resistance and connections of the door lock switch.

Water Level Sensor Testing

Steps to check the frequency and connections of the water level sensor.

Water Valve Testing

Steps to check water valve resistance, diaphragm, and voltage.

Motor Resistance Testing

Checks resistance for drain and drum motors.

Common Error Code Analysis

Water Level Sensor Errors (LE)

Analysis of LE error code, including causes and corrective actions.

Motor and Hall Sensor Errors (3E, E3, bE)

Analysis of motor-related errors (3E, E3, bE), causes, and fixes.

Water Supply Errors (nF, nF1)

Analysis of water supply errors (nF, nF1), causes, and corrective actions.

Drain Errors (nd)

Analysis of drain errors (nd), including causes and corrective actions.

Additional Error Code Analysis

Communication and Switch Errors

Analysis of communication and switch errors, including causes and fixes.

Door Operation Errors (dS, dL, LO, FL)

Analysis of door operation errors, causes, and corrective actions.

Heater and Water Leakage Errors

Analysis of heater and water leakage errors, causes, and fixes.

Further Error Code Analysis

Overflow and Temperature Sensor Errors

Analysis of overflow (OE) and temperature sensor (tE) errors.

Unbalance Load Errors (dc)

Analysis of unbalance load errors (dc), causes, and corrective actions.

Advanced Error Codes

Clutch and Foaming Errors

Analysis of clutch motor, hall sensor, and foaming detection errors.

PBA and System Errors

Analysis of Mems PBA and System errors, including causes and fixes.

Troubleshooting Common Problems

Door Lock and Spin Issues

Troubleshooting for door lock failure and inability to spin.

Operation and Noise Issues

Troubleshooting for no key operation, stopping, and noise problems.

Water and Drainage Issues

Troubleshooting for water filling, leakage, and drainage problems.

Load and Detergent Issues

Troubleshooting for load balance, wetness, and detergent issues.

Water Supply Issues

Troubleshooting for no water or insufficient water supply.

PCB Component Identification

Sub PCB Layout and Connectors

Identifies components and connectors on the Sub PCB.

Main PCB Layout and Connectors

Identifies components and connectors on the Main PCB.

Wiring and Schematic Information

Wire Color Reference

Provides a reference for wire colors used in the diagrams.

Schematic Diagram Overview

Shows the overall schematic wiring diagram of the appliance.