Error Code F
Freezer temperature sensor is broken or disconnected
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: F LED blinks
What This Means
Sensor wire disconnected from CN20; Sensor resistance out of range; Bad thermistor
What actually causes this:
Loose wire connection or failed temperature sensor
First Thing to Check
Unplug refrigerator and check if CN20 connector is fully seated
Parts Involved
How to Fix
- 1
1. Measure voltage at MAIN PCB CN20-10 to CN20-12
- 2
2. Voltage should be between 4.5V and 1.0V
- 3
3. Check connector seating and wire integrity
- 4
4. Verify thermistor model 502AT with 5.0 kΩ at 77°F
Other Error Codes for RF22R7351EF
Outside temperature sensor is not working
Ice storage room temperature sensor is not working
Flex Zone damper heater circuit is broken
Refrigerator temperature sensor is broken or disconnected
Flex-Zone temperature sensor is broken or disconnected
Freezer fan motor is not running
Control board IO expander chip is not working
Freezer defrost heater circuit is broken