Error Code AC
The washer's control panels can't talk to each other
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; Sub PBA is short-circuited because of moisture; Incorrect wire connections between sub and main PBAs; Main PBA communication circuit is faulty
What actually causes this:
A wire connector between the control boards came loose, or moisture got into the electronics
First Thing to Check
Unplug the washer for 5 minutes, then plug it back in — if the error returns, it needs service
Parts Involved
How to Fix
- 1
1. Check the wire terminal and connections between the sub and main PBAs carefully — check for disconnected wires
- 2
2. Check for incorrect or loose connections
- 3
3. Remove the sub PBA C/Panel and check for any faulty soldering
- 4
4. Check whether the sub PBA is short-circuited because of moisture
- 5
5. If the main PBA communication circuit is faulty, replace it
Other Error Codes for WA50M7450AP
The washer's WiFi module isn't communicating properly
The washer's display screen isn't communicating properly
The washer's motor controller isn't communicating properly
The vibration sensor board has a problem
The washer's door release module isn't communicating properly
The washer can't tell how much water is inside
The washer's motor can't spin properly
The washer isn't getting water when it needs it