Error Code R
Fridge temperature sensor not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: R LED blinks
What This Means
Sensor connector loose or disconnected; Sensor resistance out of range 4.5V-1.0V; Defective thermistor 502AT
What actually causes this:
Thermistor sensor connection came loose or sensor failed
First Thing to Check
Check if sensor wire is connected to the main board above the fridge section
Parts Involved
How to Fix
- 1
Check MAIN PCB CN20-9 to CN20-11 voltage range 4.5V~1.0V
- 2
Verify sensor connection at fridge location
Other Error Codes for RF28R7201AA
Main board input/output chip failure
Fridge defrost heater not working
Outdoor air sensor not responding
Ice delivery duct heater failure
Freezer defrost heating element failure
Dispenser display not communicating
Compressor control board communication failed
Ice storage compartment heater failure