Samsung RF29DB9600Refrigerator

Error Code 41C

The main control board can't talk to the display panel

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: 41C

What This Means

CN40 connector improperly inserted; Connector pin contact error or corrosion; Wire disconnection or damage in communication line; Defective Main PBA; Defective Panel PBA

What actually causes this:

The connector between the main board and display got loose

First Thing to Check

The display may be dark or unresponsive

Parts Involved

Main PBAPanel PBACN40 ConnectorCommunication Wire

How to Fix

  1. 1

    1. Check Main PBA connector CN40 insertion

  2. 2

    2. Reconnect CN40 properly or repair if loose

  3. 3

    3. Check connector pins for corrosion or damage

  4. 4

    4. Clean connector contacts with contact cleaner if needed

  5. 5

    5. Inspect communication wire for damage

  6. 6

    6. An oscilloscope is required to fully diagnose

  7. 7

    7. If issue persists after reconnection, replace Main PBA

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