Error Code AC4
The Wi-Fi module inside the washer stopped communicating with the main board
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC4
What This Means
Communication error between Wi-Fi Module and main PBA; Incorrect or loose connections between Wi-Fi Module and main PBA; Faulty soldering on Wi-Fi Module
What actually causes this:
The Wi-Fi module connector came loose or the module itself went bad
First Thing to Check
Unplug the washer for 60 seconds and plug it back in — if the error returns, it needs service
Parts Involved
How to Fix
- 1
1. Check the connector connections between the Wi-Fi Module and main PBA carefully
- 2
2. Check for incorrect or loose connections
- 3
3. Remove the Wi-Fi Module and check for any faulty soldering
- 4
4. If connections are fine, replace the Wi-Fi Module or main PBA
Other Error Codes for WF22C6400AW
A button on the control panel is stuck or pressed in
The washer thinks the door is open
The small add-door on the front of the washer is open
The small add-door lock motor is not working correctly
The washer overheated and shut itself off for safety
The washer is filling with too much water and cannot stop
The washer is not filling with water
The washer is not getting the right amount of electrical power