Error Code AC
The control panel and main computer board cannot talk to each other.
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC
What This Means
Signals between sub and main PBAs not sensed; Incorrect or loose connector connections between sub and main PBAs; Disconnected wires; Faulty soldering on sub PBA
What actually causes this:
A loose wire connection between the control panel board and the main circuit board, often from vibration.
First Thing to Check
Unplug the washer for 60 seconds, then plug it back in and try again.
Parts Involved
How to Fix
- 1
1. Check the wire connections and terminal contacts between the sub and main PBAs
- 2
2. Check for disconnected wires
- 3
3. Check whether the sub PBA is short-circuited because of moisture
- 4
4. Remove the sub PBA control panel and check for any faulty soldering
- 5
5. If the main PBA's communication circuit is faulty, replace it
Other Error Codes for WA50A5400AW
Your washer cannot detect how much water is in the tub.
A vibration sensor wire has come loose inside the washer.
The washer's WiFi module has lost its connection to the main board.
Your washer's door lock mechanism is not working correctly.
Your washer is filling with too much water and cannot detect when to stop.
Your washer has detected a water leak.
An internal power module in the washer is overheating.
Your washer's vibration sensor is not communicating properly.