Error Code 46
Input and output signals cannot be processed by refrigerator control system
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 46
What This Means
I/O expander chip failure; PCB solder joint failure; Communication bus failure; Power supply failure to expander
What actually causes this:
Main PCB I/O expander chip has failed
First Thing to Check
No visible check possible - requires oscilloscope or PCB replacement
Parts Involved
How to Fix
- 1
Verify power supply to I/O expander
- 2
Check for solder joint defects on expander chip
- 3
Test communication bus with oscilloscope
- 4
Inspect for burnt or damaged components
This Error Applies To
Samsung RF265BEA Series Refrigerators (2016) (2016–present)
Related Error Codes
Freezer defrost cycle cannot detect when ice buildup has melted
Compressor motor is not spinning and cooling system cannot function
Refrigerator defrost cycle cannot detect when ice has melted
Ice storage compartment temperature cannot be monitored
Compressor cannot receive control signals and may not operate
Freezer is warmer than it should be and food may spoil
Compressor cannot operate due to power delivery system fault
Refrigerator voltage is too high and internal components may be damaged