This guide explains how to access and use the test mode on your LG WM8100HWA washer to perform diagnostic checks.
Important Safety Note: Before proceeding, ensure the washing machine drum is empty.
How to Enter Test Mode on Your LG WM8100HWA Washer:
- Standby Mode: Turn off the washing machine but leave it plugged in.
- Button Combination: Press and hold the Spin and Soil Level buttons simultaneously. Then, while holding those buttons, press the Power button.
- Advance Through Tests: Once you hear a chime and see the display light up, press the Start/Pause button repeatedly to cycle through the various diagnostic tests.
LG WM8100HWA Washer: Running Diagnostic Tests with Test Mode
The following table summarizes the diagnostic tests available in test mode:
| Button Presses | Test | Display Status | Description |
|---|---|---|---|
| None | Initial Check | “LOAD TEST MODE” | Turns on all lamps and locks the door. |
| 1 | Tumble Clockwise | RPM (45–50) | The drum rotates clockwise at a slow speed. |
| 2 | Low-Speed Spin | RPM (55–60) | Simulates low-speed spin cycle. |
| 3 | High-Speed Spin | RPM (110–115) | Simulates high-speed spin cycle. |
| 4 | Inlet Valve (Prewash) | Water Level (25–65) | Activates the prewash water inlet valve and checks the water level sensor. |
| 5 | Inlet Valve (Main) | Water Level (25–65) | Activates the main water inlet valve and checks water level sensor. |
| 6 | Inlet Valve (Hot Water) | Water Level (25–65) | Activates the hot water inlet valve and checks the water level sensor. |
| 7 | Inlet Valve (Bleach) | Water Level (25–65) | Activates the bleach dispenser valve and checks the water level sensor. |
| 8 | Tumble Counterclockwise | RPM (42-50) | The drum rotates counterclockwise at a slow speed. |
| 9 | Heater Activation (3 seconds) | Water Temperature °C | Briefly activates the heater and displays the water temperature. |
| 10 | Circulation Pump | Water Level (25–65) | Activates the circulation pump and checks water level sensor. |
| 11 | Drain Pump | Water Level (25–65) | Activates the drain pump and checks water level sensor as water is drained. |
| 12 | Exit Test Mode | Display Off | Exits test mode and turns off the display. |
Understanding Display Values:
- Water Level: The displayed numbers will change depending on whether water is filling or draining. A decreasing number indicates filling, while an increasing number indicates draining. This confirms the water level sensor is functioning correctly.
- Motor RPMs: During tumble and low-speed spin, a 2-digit number (40–65 range) indicates RPMs between 400 and 650. In high-speed spin, a 3-digit number (100–150 range) indicates RPMs between 1000 and 1500.
- Temperature: The displayed temperature is in degrees Celsius (°C).
Exiting Test Mode:
Press the Power button to exit test mode.
Compatible LG Washer Models:
This test mode procedure applies to the following LG front-load washer models:
- WM3080CW, WM3170CW, WM3180CW, WM3270CW, WM3370HVA, WM3370HWA, WM3470HVA, WM3470HWA, WM3470CW, WM3570HVA, WM3570HWA, WM3670HVA, WM3670HWA, WM3770HVA, and WM3770HWA
- WM4370HKA, WM4370HWA, and WM4370HVA
- WM8000HWA, WM8000HKA, WM8100HVA, WM8500HWA, WM8500HVA, and WM8900HBA
Conclusion:
Test mode is a valuable tool for checking the functionality of various components in your washing machine. By following this guide, you can gain valuable insights into the machine’s performance and identify potential error codes early on.
