Error Code AC4
The WiFi module lost its connection to the main board
Moderate
Address soon - your appliance may not work properly
Also displayed as: AC4
What This Means
Signals between the WiFi Module and main PBAs not sensed due to communication error; Incorrect or loose connector connections between the WiFi Module and main PBA; Faulty soldering on the WiFi Module
What actually causes this:
The WiFi module's connection came loose, often from vibration during spin cycles
First Thing to Check
Turn off the washer at the circuit breaker, wait 60 seconds, then turn it back on
Parts Involved
How to Fix
- 1
1. Check the connector connections between the WiFi Module and main PBA carefully
- 2
2. Check for incorrect or loose connections
- 3
3. Remove the WiFi Module and check for any faulty soldering
- 4
4. If connections and soldering are normal, replace the WiFi Module or main PBA
This Error Applies To
Samsung WF45M5 Series Washers (2017) (2017–present)
Related Error Codes
The incoming water is too hot for delicate cycles
Your washer is getting too much electrical power
Your washer can't tell how much water is inside
The washer's motor isn't spinning correctly
Your washer can't pump the water out
The control panel can't communicate with the main circuit board
The display screen lost its connection to the main board
The washer's water heater isn't working properly