Error Code 46E
Main board internal I/O expander chip has failed
Moderate
Address soon - your appliance may not work properly
Also displayed as: 46E
What This Means
Failed I/O Expander IC on Main PCB; Internal Main PCB fault
What actually causes this:
Internal failure of the I/O expander integrated circuit on the Main PCB, often from a voltage spike.
First Thing to Check
Confirm the error is genuine by power cycling the refrigerator — if 46E returns immediately, the Main PCB has an internal fault.
Parts Involved
How to Fix
- 1
No cable-level fix available — this fault is internal to the Main PCB
- 2
Replace Main PCB
Other Error Codes for RF34H9950S4
Cool Select Room fan stopped or not sending feedback
Chef Pantry fan motor has stopped
Internal fridge humidity sensor disconnected or failed
Fridge temperature sensor has failed or is disconnected
Chef Pantry temperature sensor has failed
Cool Select Room sensor failed or disconnected
Fridge defrost sensor disconnected or failed
Cool Select Room defrost sensor failed