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Samsung Refrigerators2010–present

Error Code IDH

Ice duct heater is not working

Moderate

Address soon - your appliance may not work properly

Also displayed as: IDH LED blinks

What This Means

Heater element shorted; Thermostat failed; Wire connection loose; Bimetal open circuit

What actually causes this:

Heater element failed or loose connection

First Thing to Check

Unplug and check if CN20 connector is fully seated

Parts Involved

Fridge Ice Duct HeaterBimetal Thermostat

How to Fix

  1. 1

    1. Disconnect MAIN PCB CN20 from board

  2. 2

    2. Measure resistance between CN20-21 and CN20-23

  3. 3

    3. Should read 63 ohms ±7%

  4. 4

    4. 0 ohm indicates short, infinity indicates open

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

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

FZ

Flex-Zone temperature sensor is broken or disconnected

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