What does error code 46E mean on a Samsung refrigerators?

An internal chip on the main board that controls inputs and outputs has failed Defective I/O expander IC on Main PCB; Communication bus fault; Defective Main PCB

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

1. undefined: Replace Main PCB and retest — I/O expander is integrated on the Main PCB

Samsung Refrigerators2021–present

Error Code 46E

An internal chip on the main board that controls inputs and outputs has failed

Moderate

Address soon - your appliance may not work properly

Also displayed as: 46E

What This Means

Defective I/O expander IC on Main PCB; Communication bus fault; Defective Main PCB

What actually causes this:

Internal component failure on the Main PCB

First Thing to Check

Verify the refrigerator is fully powered and the 12V/5V supply voltages from the SMPS are correct

Parts Involved

Main PCB (I/O Expander integrated)

How to Fix

1
Replace Main PCB and retest — I/O expander is integrated on the Main PCB

This Error Applies To

Samsung RF29A9071 Series Refrigerators (2021) (2021–present)

Service manual exact match: RF23A9071*Service manual exact match: RF23A9675MT*Service manual exact match: RF71A9671*Service manual exact match: RF71A9771*Service manual exact match: RF85A92FA*Service manual exact match: RF29A9071*Service manual exact match: RF29A9770*Service manual exact match: RF23A9675*+2 more

Related Error Codes

87E

The power coming into the refrigerator is dangerously high

The convertible Flex Zone compartment is too warm

77E

The heater that prevents condensation on the showcase door panel has an open circuit

86E

The power coming into the refrigerator is too low for the compressor to run

118C

The second ice supply line heater has an open circuit

Freezer temperature sensor is reading an impossible value

Fridge compartment sensor is detecting an impossible temperature

Freezer defrost sensor is reading outside its valid range

Need more help with your Samsung refrigerators?