Error Code F2
Refrigerator compartment air temperature sensor is open or shorted
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: F2 (F-ROOM STEP 2 LED blinking)
What This Means
Sensor housing separation; Contact error at sensor connector; Disconnected sensor wiring harness; Short circuit in sensor or wiring
What actually causes this:
Failed, disconnected, or shorted fridge thermistor or wiring
First Thing to Check
Check CN31 connector insertion; measure voltage at CN31 #7 to #8
Parts Involved
How to Fix
- 1
Check MAIN PCB CN31 connector is properly inserted
- 2
Measure voltage between MAIN PCB CN31 pin 7 and pin 8 (should be 4.5V to 0.5V)
- 3
If voltage < 0.6V = short; if > 4.6V = open
- 4
Check IC10 MICOM Pin #54 input voltage
- 5
Verify MICOM #54 voltage matches CN31 #7 to #8
- 6
Replace R-Sensor if defective
This Error Applies To
Samsung RT21M6215 Series Refrigerators (2017) (2017–present)
Related Error Codes
Freezer compartment air temperature sensor is open or shorted
Freezer failed to complete defrost cycle within 150 minutes
Freezer compartment fan motor is not spinning or feedback signal lost
Freezer defrost sensor open or short circuit
Ice maker sensor failure or ice maker mechanism cannot complete function test
Ambient temperature sensor is open or shorted
Condenser fan motor is not operating or feedback signal lost
Compressor has failed and stopped operating