Samsung RF28K9070AARefrigerator
Error Code 46C
I/O Expander is not responding to main board
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 46C
What This Means
I/O Expander failure; Main PCB malfunction; Cable connection problem
What actually causes this:
Main PCB failure or communication line break
First Thing to Check
Check if all connectors to main PCB are attached
Parts Involved
Main PCB
How to Fix
- 1
Check I/O Expander connector
- 2
Verify cable connections
- 3
Test I/O communication signals
Other Error Codes for RF28K9070AA
22C
Fridge fan motor is not operating
31C
Cool Select fan motor is not running
21C
Freezer fan motor is not working
41C
Main and panel boards are not communicating
44C
Compressor inverter is not communicating with main board
5C
Fridge defrost sensor is not working
4C
Freezer defrost sensor is not responding
61C
Ice duct heater not working properly