Error Code 46

An I/O control chip on the main board is not responding

Also displayed as: 46

What This Means

I/O expander chip soldering failure; I/O expander chip failure; Communication line short or open; Main PCB damage or component failure

First Thing to Check

Parts Involved

How to Fix

1. 1

   1. Check Main PCB for visible soldering defects around I/O expander

2. 2

   2. Check for loose or cold solder joints

3. 3

   3. Check communication line continuity

4. 4

   4. If all connections appear normal, replace Main PCB

This Error Applies To

Samsung RF22NP Series Refrigerators (2018) (2018–present)