Error Code AC
The 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
Connector connections between sub and main PBAs are incorrect or loose; Sub PBA has faulty soldering; Wire disconnected between sub and main PBAs; Sub PBA is short-circuited because of moisture; Main PBA communication circuit is faulty
What actually causes this:
A wire connector between the control panel and the main board came loose, or moisture got into the electronics
First Thing to Check
Unplug the washer for 2 minutes and plug it back in — this can reset the communication link
Parts Involved
How to Fix
- 1
1. Check the wire connections and terminal contacts between the sub and main PBAs
- 2
2. Check the connector connections between the sub and main PBAs carefully for incorrect or loose connections
- 3
3. Remove the sub PBA control panel and check for any faulty soldering
- 4
4. Check for disconnected wires
- 5
5. Check whether the sub PBA is short-circuited because of moisture
- 6
6. If the main PBA communication circuit is faulty, replace it
Other Error Codes for WF56H9100AV
An internal electronic module cannot communicate with the main board
The motor speed controller cannot communicate with the main board
The washer's main computer chip has stopped working
The washer's main computer chip has stopped working
The washer cannot detect the water level properly
The washer motor cannot spin or is struggling to turn
The washer is not getting water to fill the tub
The incoming water is too hot for the selected cycle