Error Code AC4
The WiFi module can't communicate with 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 PBA are not sensed; Incorrect or loose connections between the WiFi Module and main PBA; Faulty soldering on the WiFi Module
What actually causes this:
The WiFi module connector came loose — the washer still works for washing, just not smart features
First Thing to Check
Check if the washer still runs normal wash cycles — if it does, only the smart features are affected
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
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung WF45R6100A Series Washers (2024) (2024–present)
Related Error Codes
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A button on the control panel is stuck or pressed in