Error Code 52Er
Wi-Fi connectivity module cannot communicate with main board
Moderate
Address soon - your appliance may not work properly
Also displayed as: 52Er
What This Means
Wi-Fi module communication cable loose or damaged; Defective Main PCB; Defective Wi-Fi PCB module
What actually causes this:
The Wi-Fi board has lost its connection to the main control board, which only affects app control and smart grid features.
First Thing to Check
Reseat the cable connecting the Wi-Fi module to the main board — this is often enough to resolve the error.
Parts Involved
How to Fix
- 1
Check communication cable between Main PCB and Wi-Fi module
- 2
Use oscilloscope to verify communication signal
- 3
Replace Wi-Fi PCB if cable is intact
- 4
Replace Main PCB if problem persists
This Error Applies To
Samsung DRF36C Series Refrigerators (2022) (2022–present)
Related Error Codes
Internal I/O expander chip on main board has a communication fault
Freezer temperature sensor is disconnected or out of range
Freezer evaporator fan is not running when it should be
Freezer defrost sensor is disconnected or reading out of range
Condenser fan motor in the machine compartment is not running
External temperature sensor is unplugged or has failed
Freezer defrost heater or safety cutout has failed or wiring is open
Fridge temperature sensor is disconnected or out of range