Error Code 46
Main board and I/O expander board have lost communication
Moderate
Address soon - your appliance may not work properly
Also displayed as: 46Er
What This Means
I/O Expander board failure; Main PCB failure; Wiring harness fault
What actually causes this:
The I/O expander chip or board is not communicating with the main control board.
First Thing to Check
Verify wiring harness between main PCB and I/O expander is intact.
Parts Involved
How to Fix
- 1
Check wiring between I/O expander and Main PCB
- 2
Replace Main PCB
Other Error Codes for RS27FDBTNSR
Fridge defrost sensor has failed or lost connection
Fridge cooling fan motor is not spinning or sending feedback
Freezer temperature sensor has failed or disconnected
Ambient room temperature sensor has failed or disconnected
Fridge temperature sensor has failed or disconnected
Ice maker temperature sensor has failed or disconnected
Main board and inverter compressor board have lost communication
Freezer defrost sensor has failed or lost connection