Error Code AC
Your washer's control panel cannot communicate with the main circuit board.
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC
What This Means
Signals between the sub and main PBAs not sensed due to communication error; Incorrect or loose connector connections between sub and main PBAs; Faulty soldering on the sub PBA control panel
What actually causes this:
A wire connection between the control panel and the main board inside the washer came loose, possibly from vibration over time.
First Thing to Check
Unplug the washer for 2 minutes, then plug it back in and try again — sometimes a power reset clears the communication glitch.
Parts Involved
How to Fix
- 1
1. Check the wire connections and terminal contacts between the sub and main PBAs
- 2
2. Look for incorrect or loose connections
- 3
3. Check for disconnected wires
- 4
4. Check whether the sub PBA is short-circuited because of moisture
- 5
5. Remove the sub PBA control panel and check for faulty soldering
- 6
6. If the main PBA communication circuit is faulty, replace it
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
Other Error Codes for WF45N5300AF
An internal communication module in your washer has lost its connection.
Your washer's vibration sensor has a general fault.
Your washer's main computer board has crashed and cannot recover.
Your washer's door lock mechanism has a hardware fault.
Your washer's motor controller has lost communication with the main board.
Your washer is not getting enough water to start or continue the cycle.
Your washer is not getting enough electrical power to run properly.
Your washer cannot detect the water level inside the drum.