Error Code AC4
The washer's WiFi chip cannot 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 PBAs not sensed due to communication check; Incorrect or loose connector connections between WIFI Module and main PBAs; Faulty soldering on WIFI Module
What actually causes this:
The WiFi module connector has come loose, or the module itself has failed.
First Thing to Check
Unplug the washer for 60 seconds, then plug it back in and try again.
Parts Involved
How to Fix
- 1
1. Check connector connections between the WIFI Module and main PBAs carefully
- 2
2. Check for incorrect or loose connections
- 3
3. Remove the WIFI Module and check for any faulty soldering
This Error Applies To
Samsung WA51A5505A Series Washers (2024) (2024–present)
Related Error Codes
The drying heater has an electrical problem.
The washer has detected a water leak somewhere in the system.
An internal circuit board is not communicating properly.
The washer's clutch moved but did not reach the correct position.
The washer's main computer chip has malfunctioned.
The washer's main computer chip has malfunctioned.
The washer's main computer chip has malfunctioned.
The laundry load is uneven and the washer cannot spin safely.