Diagnostic Test Mode Overview
What is Diagnostic Test Mode?
Whirlpool's diagnostic test mode allows technicians and users to run comprehensive tests on the washing machine's components to identify issues and verify proper operation.
Benefits of Diagnostic Mode
- Identify specific component failures
- Verify sensor and motor operation
- Test water inlet and drain systems
- Check electronic control board functionality
- Save time on repairs and diagnostics
Entering Diagnostic Test Mode
Standard Entry Procedure
- Power Off: Ensure the washing machine is powered off completely
- Button Sequence: Press and hold specific buttons (varies by model)
- Power On: While holding buttons, turn the machine on
- Release Buttons: Release buttons when diagnostic mode activates
- Confirm Entry: Look for diagnostic indicators on display
Model-Specific Entry Methods
| Front Load Models | Press and hold "Delay Start" + "Cycle Select" for 3 seconds |
| Top Load Models | Press and hold "Power" + "Start/Pause" simultaneously |
| Cabrio Series | Rotate cycle knob to specific position and press buttons |
| Duet Series | Press "Options" + "Power" buttons together |
| Older Models | Consult specific model manual for entry procedure |
Diagnostic Test Procedures
Motor Test
Tests the drive motor operation at various speeds and directions to ensure proper functionality and identify any motor-related issues.
Water Inlet Test
Checks cold and hot water inlet valves for proper operation, flow rates, and leak detection during fill cycles.
Drain Pump Test
Tests the drain pump operation, flow capacity, and verifies proper drainage system functionality.
Sensor Calibration
Calibrates and tests various sensors including water level, temperature, and load sensing sensors.
Control Board Test
Comprehensive test of the main control board, display functions, and user interface components.
Heater Test
Tests the water heating element and temperature control systems for proper operation and safety.
Step-by-Step Test Execution
- Enter Diagnostic Mode: Use appropriate entry sequence for your model
- Select Test Type: Navigate through test options using control buttons
- Initiate Test: Press start to begin selected diagnostic test
- Monitor Results: Observe machine behavior and note any error codes
- Document Findings: Record test results for troubleshooting reference
- Exit Mode: Properly exit diagnostic mode to resume normal operation
Diagnostic Error Codes
| Error Code | Description | Possible Causes |
|---|---|---|
| F1 | Motor Control Fault | Motor failure, wiring issues, control board problem |
| F2 | Water Inlet Timeout | Water supply issues, clogged filters, valve failure |
| F3 | Drain Timeout | Clogged drain, pump failure, drain hose issues |
| F4 | Water Level Sensor Fault | Sensor failure, air tube blockage, control board issue |
| F5 | Temperature Sensor Fault | Sensor failure, wiring issues, heater problem |
| F6 | Heater Fault | Heater element failure, thermostat issue, wiring problem |
| F7 | Communication Error | Control board failure, wiring harness issues |
| F8 | Motor Stalled | Motor failure, mechanical obstruction, control issue |
Advanced Diagnostic Codes
- LF: Long Fill Error - Check water pressure and inlet valves
- LD: Long Drain Error - Inspect drain system and pump
- SUD: Suds Error - Excessive suds detected
- UE: Unbalanced Load - Redistribute clothing
- OE: Overfill Error - Water level sensor malfunction
- PF: Power Failure - Reset machine after power interruption
Troubleshooting with Diagnostic Mode
| Symptom | Diagnostic Test | Solution |
|---|---|---|
| Machine won't start | Control Board Test | Check power supply, door latch, control board |
| No water filling | Water Inlet Test | Check water supply, inlet valves, filters |
| Water won't drain | Drain Pump Test | Inspect drain pump, hose, filter |
| Excessive vibration | Motor Test + Balance Test | Check suspension, leveling, load distribution |
| No heating | Heater Test | Test heater element, thermostat, wiring |
| Error codes displayed | Full System Diagnostic | Run complete diagnostic, note all codes |
Common Diagnostic Scenarios
Intermittent Operation
Run extended diagnostic tests to identify intermittent component failures
Noise Issues
Use motor and mechanical tests to isolate noise sources
Performance Problems
Test all systems to identify root cause of poor performance
Electronic Issues
Run control board and sensor diagnostics for electronic problems
Manual Downloads
Diagnostic Manuals by Series
Cabrio Series
Top Load Diagnostic Manual
Duet Series
Front Load Diagnostic Guide
Classic Series
Traditional Models Diagnostic
Smart Series
Wi-Fi Enabled Models
Technical Service Manuals
Service Manual Vol. 1
Basic Diagnostics & Repairs
Service Manual Vol. 2
Advanced Troubleshooting
Error Code Reference
Complete Error Code List
Parts Catalog
Replacement Parts Guide