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Samsung Refrigerators2010–present

Error Code DP

Main board and water/ice dispenser panel are not communicating

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: DP LED blinks

What This Means

Communication cable disconnected; Connector pins damaged; Main board failure; Dispenser panel PCB failure

What actually causes this:

Loose cable or failed dispenser panel board

First Thing to Check

Check if dispenser panel cable is firmly connected to main board

Parts Involved

Main PCBDispenser Panel PCBCommunication Cable

How to Fix

  1. 1

    1. Check communication cable to dispenser panel

  2. 2

    2. Inspect connector seating and pins

  3. 3

    3. Use oscilloscope to verify signal transmission

  4. 4

    4. Check PCB soldering on both boards

This Error Applies To

Samsung RF22R7351 Series Refrigerators (2010) (2010–present)

Service manual exact match: RF22R7351AAService manual exact match: RF22R7351AZService manual exact match: RF22R7351EFService manual exact match: RF22R7351EU

Related Error Codes

FZHT

Flex Zone compartment is too warm right now

IDH

Ice duct heater is not working

F

Freezer temperature sensor is broken or disconnected

EA

Outside temperature sensor is not working

IR

Ice storage room temperature sensor is not working

FLXD

Flex Zone damper heater circuit is broken

CI

Main board and compressor inverter board cannot communicate

R

Refrigerator temperature sensor is broken or disconnected

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