Whirlpool MAT20CS Manual

DANGER
Only authorized technicians should
perform diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can
result in death or electrical shock.
When performing live voltage measurements, you must do the following:
 Verify the controls are in the off position so that the appliance does not start when energised.
 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.
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 assembly. The new
main control assembly may appear to work well after repair is finished, but a malfunction may occur
at a later date due to ESD stress.
 Use an anti-static wrist strap. Connect wrist strap to green earth connection point or unpainted
metal in the appliance.
Touch your finger repeatedly to a green earth connection point or unpainted metal in the appliance.
 Before removing the part from its package, touch the anti-static bag to a green earth 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.
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.
Diagnostic Guide ................................................................2
Service Diagnostic Test Modes ....................................... 2-5
Customer Viewable Fault Codes ........................................3
Service Fault / Error Codes .............................................6, 7
Quick Overview Tests ..........................................................8
Manual Overview Tests .......................................................9
DO NOT REMOVE OR W10838066C DESTROY
FOR SERVICE TECHNICIAN'S USE ONLY
COMMERCIAL WASHERS, MODELS XCAE2765, MAT20CS, MAT20MN
Voltage Measurement Safety Information
- OR -
Contents
Troubleshooting Guide ...............................................10, 11
Troubleshooting Tests ................................................. 12-18
Main Control Connectors & Pinouts .................................12
Component Locations & Washer Specifications ..............19
Wiring Diagram .................................................................20
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