Admiral Washer Error Code dU: Lid Unlock Troubleshooting... | appliancefaults.com

Technical Background:

The dU error code indicates a problem with the lid lock mechanism. The MCU (Main Control Unit) sends a signal to lock the lid during operation and unlock it upon cycle completion. The lid switch provides feedback to the MCU, confirming the lid's locked/unlocked status. If the MCU doesn't receive the expected feedback, it throws the dU error.

Symptoms:

The washing machine displays the error code "dU" on the control panel. The lid is locked and will not open, even after the wash cycle is complete. The machine may or may not complete the wash cycle before displaying the error.

Possible Causes:

Faulty lid switch assembly
Wiring harness issue between the lid switch and the main control board (MCU)
Defective lid lock motor or solenoid
Corrupted data on the MCU requiring reset or replacement
Obstruction preventing proper lid lock engagement

Solution:

1

Unplug the washing machine from the 120V AC outlet. Always disconnect power before servicing.
2

Locate the lid switch assembly. Usually under the top panel, accessible by removing screws at the rear of the machine.
3

Inspect the wiring harness connecting the lid switch to the MCU. Look for any damaged, loose, or corroded wires. Repair or replace as needed.
4

Using a multimeter, check the continuity of the lid switch when the lid is closed. It should show continuity when the lid is closed and open when the lid is open. Replace if faulty.
5

Test the voltage to the lid lock solenoid. During the unlock cycle (usually right after a wash), you should see approximately 120V AC. If there's no voltage, the MCU may be defective.
6

If voltage is present but the lid won't unlock, the lid lock solenoid itself is likely faulty and needs replacement.
7

As a last resort, replace the main control board (MCU). This is typically only necessary if all other components are testing correctly.

Safety Warning:

Disconnect power to the appliance before attempting any repairs (Lock Out/Tag Out - LOTO procedure). The washing machine operates on 120V AC, which can cause serious injury or death. Use caution when working with electrical components.

Prevention:

Avoid slamming the lid, as this can damage the lid switch assembly. Periodically inspect the lid lock area for debris that could obstruct the locking mechanism.

Expert Tip:

Some Admiral washers have a service mode that allows you to manually test the lid lock mechanism. Consult the service manual or search online for your specific model's service mode entry sequence. This can help isolate the problem quickly.

Frequently Asked Questions

•How do I access the lid switch on my Admiral washer?

Typically, you'll need to unplug the washer, then remove the screws at the back of the top panel. Slide the top panel back and lift it to access the lid switch assembly underneath.

•What voltage should I expect to see at the lid lock solenoid?

You should expect to see approximately 120V AC at the lid lock solenoid during the unlock cycle (usually right after a wash). Use a multimeter to measure the voltage.

•If the lid lock solenoid is getting voltage, but the lid still won't unlock, what does that indicate?

If the solenoid is getting voltage but the lid remains locked, it strongly suggests the solenoid itself is defective and needs replacement. The solenoid might be mechanically stuck or have a failed winding.

Admiral Washer Error Code dU: Lid Unlock Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the lid switch on my Admiral washer?

•What voltage should I expect to see at the lid lock solenoid?

•If the lid lock solenoid is getting voltage, but the lid still won't unlock, what does that indicate?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: