Whirlpool CAE2743B User Manual

PAGE 1
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.
Diagnostic Guide ................................................................2
Activating Service Diagnostic Test Modes ..........................2
Diagnostic Test Modes ....................................................3–5
Customer Viewable Fault Codes ........................................5
Service Fault / Error Codes .............................................6, 7
Quick Overview Tests ..........................................................8
Contents
Manual Overview Tests .......................................................9
Troubleshooting Guide ...............................................10, 11
Troubleshooting Tests .................................................12–18
Main Control Connectors & Pinouts .................................12
Component Locations & Washer Specs ..........................19
Wiring Diagram .................................................................20
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 ground connection point or unpainted
metal in the appliance
– OR –
To uc h y ou r fi ng e r re p ea te d ly t o a g r ee n g ro un d c on n ec ti o n po i nt o r u np a in te d m et a l in th e a pp li a nc e.
 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:
 Verify the controls are in the off position so that the appliance does not start when energized.
 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.
PART NO. W10554748D

Whirlpool CAE2743B Specifications

General

Color	White
Wash Cycles	12
Width	27 inches
Configuration	Top Load
Energy Star Certified	No
Spin Speed	700 RPM
Voltage	120 V

Summary

Diagnostic Guide

Diagnostic LED - Main Control

Explains the function and status of the main control diagnostic LED.

Service Diagnostic Test Modes

Introduces diagnostic tests for verifying washer inputs and functions.

Activating Service Diagnostic Test Modes

Diagnostic Test Modes

Fault Code Display Mode

Accesses and displays logged fault/error codes for diagnosis.

Quick Overview Test Mode

Provides a quick diagnostic check of major washer functions.

Manual Overview Test Mode

Allows manual testing and verification of all washer outputs.

Unsuccessful Entry into Diagnostic Mode

Exiting Diagnostic Test Modes

Quick Overview Test Mode

Manual Overview Test Mode

Calibration Mode

UI Test Mode

Software Version Display Mode

Factory Diagnostics

Tachometer Verification Mode

Customer Viewable Fault Codes

Fault/Error Codes #1

Fault/Error Codes #2

Quick Overview Test Mode

Manual Overview Test Mode

Troubleshooting Guide

Troubleshooting Guide (continued)

TEST #1: Main Control

Main Control Board Connectors and Pinouts

Shows pinouts and connections for the main control board.

TEST #2: Valves

TEST #3a: Drive System – Shifter

Shifter Motor Testing

Details resistance checks and testing procedures for the shifter motor.

TEST #3a: Drive System – Shifter (Continued)

Shifter Optical Sensor Testing

Checks the optical sensor circuit for the shifter assembly.

TEST #3b: Drive System – Motor

TEST #3b: Drive System – Motor (Continued)

Motor Harness and Connections Check

Verifies continuity and resistance of motor wiring and connections.

Test Motor Run Capacitor

TEST #4: Console and Indicators

Console LED and Rotary Switch Issues

Troubleshoots issues with console LEDs and rotary switch functionality.

TEST #5: Temperature Thermistor

TEST #5: Temperature Thermistor (Continued)

TEST #6: Water Level

TEST #7: Drain Pump

TEST #7: Drain Pump (Continued)

TEST #8: Lid Lock

Component Locations – Console & Valves

Component Locations – Drive System & Drain Pump

Washer Specifications

Wiring Diagram

Coin Slide Interface Module Diagram

Illustrates the wiring and functions of the coin slide interface module.