⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: Washer Difficulty: Moderate
Problem: Serial Communication Error (CCU to MCU)
How to Fix Washer Error
- Unplug the washer from power for 10 minutes to attempt a reset.
- Remove the top panel and control panel to access the main control board.
- Check all wire harness connections for loose or corroded connections.
- Remove the rear access panel to inspect the motor control unit connections.
- Disconnect the power cord and remove mounting screws from the main control board.
- Carefully label and disconnect all wire harnesses from the control board.
- Remove the old control board and inspect for any visible damage or burnt components.
- Install the new control board, ensuring all connectors are properly aligned.
- Reconnect all harnesses according to your labels.
- Reassemble all panels and perform a system reset by unplugging for 5 minutes.
- Test all wash cycles and functions to verify proper operation.
Recommended Replacement Part
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
⚡ Don’t Risk a DIY Fail!
Get the ‘Secret Service Mode’ Cheat Sheet for your Maytag model. Includes an easy-to-read list of every error code and quick diagnostic tips.
✅ Join 15,000+ DIYers • Instant PDF Download
Browse More Codes
📖 View All Error Codes
Most DIY parts are $50–$250. If you have a quote, use the total.
More options (for a better recommendation)
Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →
Leave a Reply