Error Code F_SENSOR
Freezer compartment temperature sensor malfunction
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: F Sensor Error
What This Means
Bad connector contact at CN20 pin 10 and 12; Open circuit or short in sensor; Water damage to sensor or connector; Sensor age-related resistance change; Mechanical damage to sensor
What actually causes this:
Freezer temperature sensor disconnected or failed, preventing proper freezer cooling control
First Thing to Check
Check that connector CN20 is fully inserted and look for water or frost
Parts Involved
How to Fix
- 1
Check CN20 connector insertion
- 2
Measure voltage between CN20 pins 10 and 12 (YEL and YEL)
- 3
Measure resistance between same pins
- 4
Compare to temperature table DATA1
- 5
Inspect sensor for physical damage
Other Error Codes for RF28T5A01SR
Refrigerator compartment temperature sensor is disconnected or dead
Internal humidity sensor has failed or is disconnected
Defrost sensor on freezer evaporator is failed or disconnected
Freezer fan motor is not running or not sending feedback
Supply voltage to compressor is too high
Freezer temperature sensor is failing or disconnected
Ice maker temperature sensor in freezer is failed or unplugged
External room temperature sensor is failed or disconnected