Error Code FLEX_ZONE_SENSOR
FlexZone compartment temperature sensor is faulty
Moderate
Address soon - your appliance may not work properly
Also displayed as: F or R blinks (OPTION)
What This Means
Connector CN40 pins 18/20 loose; Mid drawer thermistor open or shorted; Wiring damage
What actually causes this:
The sensor measuring FlexZone drawer temperature has failed, preventing accurate temperature control in that compartment.
First Thing to Check
Open the FlexZone drawer and confirm the sensor wire connector at CN40 is firmly inserted.
Parts Involved
How to Fix
- 1
Verify voltage at MAIN PCB CN40 pins 18 and 20 is between 1.0V and 4.5V
- 2
Measure resistance at Mid: CN40 '18' ↔ '20'
This Error Applies To
Samsung RF23BB89 Series Refrigerators (2023) (2023–present)
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