Whirlpool WFW94HEX - Component Testing for Service Technicians

5-1
COMPONENT TESTING
FOR SERVICE TECHNICIAN’S USE ONLY
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
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.
Whirlpool User Interface ....................................... 2
Maytag User Interface .......................................... 3
Diagnostic Guide .................................................. 4
Service Diagnostic Mode ...................................... 4
Quick Diagnostic Test ........................................... 4
Fault/Error Codes ................................................. 8
Contents
Troubleshooting Guide ........................................ 11
Test Procedures ................................................. 13
Manually Unlocking the Door Lock System ......... 22
Component Removal .......................................... 22
Wiring Diagrams ................................................ 23
PART NO. W10254474A
IMPORTANT: Electrostatic Discharge (ESD) Sensitive Electronics
ESD problems are present everywhere. Most people begin to feel an ESD discharge at
approximately 3000V. It takes as little as 10V to destroy, damage, or weaken the main control
but a malfunction may occur at a later date due to ESD stress.
 Use an anti-static wrist strap. Connect wrist strap to green ground connection point or
unpainted metal in the appliance
-OR-
in the appliance.
 Before removing the part from its package, touch the anti-static bag to a green ground
connection point or unpainted metal in the appliance.
 Avoid touching electronic parts or terminal contacts; handle electronic control assembly
by edges only.
 When repackaging main control assembly in anti-static bag, observe above instructions.
Voltage Measurement Safety Information
When performing live voltage measurements, you must do the following:

 Allow enough space to perform the voltage measurements without obstructions.
 Keep other people a safe distance away from the appliance to prevent potential injury.
 Always use the proper testing equipment.
 After voltage measurements, always disconnect power before servicing.
Electrostatic Discharge (ESD) Sensitive Electronics