What does error code 46 mean on a Samsung refrigerators?

Main board and I/O expander board have lost communication I/O Expander board failure; Main PCB failure; Wiring harness fault

How do I fix error code 46 on a Samsung refrigerators?

1. undefined: Check wiring between I/O expander and Main PCB 2. undefined: Replace Main PCB

Samsung Refrigerators2016–present

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

Main PCBI/O Expander PCB

How to Fix

1
Check wiring between I/O expander and Main PCB
2
Replace Main PCB

This Error Applies To

Samsung RS27FDBTNS Series Refrigerators (2016) (2016–present)

Service manual exact match: RS27FDBTNSR/**Service manual exact match: DYF42SBIWSService manual exact match: RS27FDBTNSR/AAService manual exact match: RS757LHQESR/**

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