Brand:
Whirlpool
Category: Washers
Document Type: Parts/Service
Language: EN
Available Languages: EN , ES
Parts/Service for WTW8500DC
Uploaded: Nov. 21, 2025, 7:13 p.m.
Warranty Information
This service data sheet is intended for technicians and not for consumer warranty claims.
The manual provides detailed troubleshooting procedures for technicians. It includes safety warnings for electrical hazards and electrostatic discharge. Key sections cover diagnostic guides, service diagnostic modes, key activation & encoder tests, service test modes, software version display, and fault & error codes. It also details specific troubleshooting tests for components like the main control, valves, drive system, thermistor, water level, drain pump, lid lock, and heater element. Component locations and wiring diagrams are also provided.
Troubleshooting and error codes
| Problem | Possible Cause | Checks & Tests |
|---|---|---|
Won't Power Up
|
No power to washer. Connection problem between AC plug and main control. Connections between main control and UI. User Interface problem. Main Control problem. |
Check power at outlet, check circuit breakers, fuses, or junction box connections. Check the AC power cord for continuity. Check connections and continuity between main control and UI. See TEST #4: Keys and Encoders, page 17. See TEST #1: Main Control, page 14. |
| Won't Start Cycle No response when START is pressed |
Lid lock mechanism not functioning. | 1. Lid not closed due to interference. 2. Lock not closed due to interference. 3. See TEST #8: Lid Lock, page 20. |
| UI Won't Accept Selections | Connections between main control and UI. User Interface problem. Main Control problem. |
Check connections and continuity between main control and UI. See TEST #4: Keys and Encoders, page 17. See TEST #1: Main Control, page 14. |
| Won't Fill | Connections between main control and UI. User Interface problem. Main Control problem. |
Check connections and continuity between main control and UI. See TEST #4: Keys and Encoders, page 17. See TEST #1: Main Control, page 14. |
| Overfills | No water supplied to washer. Plugged filter/screen. Drain hose installation. Valve problem. Main Control problem. |
1. Check water connections to washer. 2. Verify that hot and cold water supply is on. Check for plugged filter or screen in the water valve or hoses. Check for proper drain hose installation. See TEST #2: Valves, page 15. See TEST #1: Main Control, page 14. |
| Won't Dispense Fabric Softener Or Oxi (Oxi not on all models) | No water supplied to washer. Obstruction in dispenser. Valve problem. Main Control problem. |
1. Check water connections to washer. 2. Verify that hot and cold water supply is on. Clean obstruction from dispenser. See TEST #2: Valves, page 15. See TEST #1: Main Control, page 14. |
| Incorrect Water Temperature | Water hose installation. Temperature thermistor. Valve problem. Main Control problem. |
Make sure inlet hoses are connected properly. See TEST #5: Temperature Thermistor, page 18. See TEST #2: Valves, page 15. See TEST #1: Main Control, page 14. |
| Won't Agitate | Water covering the impeller? Is lid lock showing open during the cycle? Harness connections. Shifter problem. Motor problem. Main Control problem. |
See TEST #6: Water Level, page 19. See TEST #8: Lid Lock, page 20. Check harness connections between main control and drive system. See TEST #3a: Drive System - Shifter, page 15. See TEST #3b: Drive System - Motor, page 16. See TEST #1: Main Control, page 14. |