Error Code 18
Smart home WiFi connectivity lost
Minor
Usually easy to fix - may resolve on its own
Also displayed as: 52
What This Means
WiFi module not connected properly; WiFi module firmware issue; MAIN PCB communication port failure; Loose connector between module and PCB; Incompatible WiFi authentication protocol
What actually causes this:
WiFi dongle came loose or isn't communicating with main board
First Thing to Check
Check if smart dongle is plugged in and has power
Parts Involved
How to Fix
- 1
Verify WiFi module connector (CN02) is fully seated on MAIN PCB
- 2
Check module for proper power supply
- 3
Look for loose or corroded connector pins
- 4
Ensure wireless network uses WPA/TKIP or WPA2/AES encryption
- 5
Test communication signal
This Error Applies To
Samsung RR39M73 Series Refrigerators
Related Error Codes
External humidity sensor reading is out of range
Cooling fan motor is not operating properly
Fridge room temperature sensor is malfunctioning
Freezer defrost temperature sensor malfunction detected
Freezer defrost cycle cannot complete properly
Compressor power control module failure
House electrical supply voltage too high
Condenser fan motor not operating when required