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.
As an Amazon Associate, we earn from qualifying purchases through links on this page.
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
When It’s Better to Replace Than Repair
Sometimes replacing an appliance makes more financial sense than putting more money into repairs.
Here are a few signs it may be time to shop for a new one:
For repair parts, verify exact fit with the full washer model number before buying; these links are general replacement-appliance shopping options.
- ✓Appliance over 8-10 years old
- ✓Repair cost over 50% of replacement
- ✓Multiple recent breakdowns
- ✓Major component failure
Recommended Replacement Options
Budget Option
Top Rated Washers Under $600
- Amazon’s Highest-Rated Value Models
- Free ‘Room of Choice’ Delivery Available
- Professional Haul-away Options at Checkout
View Top Rated Models & Delivery Options
Mid-Range Option
Top Rated Washers $600 to $1,000
- Best-Sellers with Thousands of 5-Star Reviews
- Expert Installation & Hookup Services available
- Protection Plans for Long-Term Peace of Mind
View Top Rated Models & Delivery Options
Premium Option
Top Rated Washers Over $1,000
- Top-of-the-Line Performance & Technology
- White-Glove Delivery and Haul-away eligible
- Comprehensive Warranty & Support Options
View Top Rated Models & Delivery Options
Why Upgrade via Amazon?
- Fast, Scheduled Delivery – You pick the date and time
- Expert Installation – Professional setup available for most models
- Old Appliance Haul-away – They’ll take your broken unit when they leave
- Easy Returns – Buy with confidence from a leader in customer service
As an Amazon Associate, we earn from qualifying purchases.
Browse all Maytag error codes: Maytag Error Codes