Samsung Refrigerators2018–present

Error Code 27

FlexZone damper heater is not working

Moderate

Address soon - your appliance may not work properly

Also displayed as: 27

What This Means

Heater disconnected or loose connector; Heater burned out or open circuit; Heater shorted to ground; Wiring harness damage

What actually causes this:

The damper heater burned out or the control circuit failed

First Thing to Check

Check if FlexZone compartment can switch between fridge and freezer modes

Parts Involved

Damper heater (AC120V, 10W)Main PCBWiring harness

How to Fix

  1. 1

    1. Unplug refrigerator for safety

  2. 2

    2. Disconnect MAIN PCB CN77 wire from PCB

  3. 3

    3. Measure resistance between CN77 Black ↔ Brown wire

  4. 4

    4. Normal resistance: 135 ohm ± 7%

  5. 5

    5. If 0 ohm: heater is shorted

  6. 6

    6. If ∞ ohm: heater/wire is open

This Error Applies To

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

Service manual exact match: RF22NPService manual exact match: RF28NH

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