Error Code 1C
Freezer temperature sensor is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 1C
What This Means
Sensor housing separation; Incomplete contact at sensor; Open-circuited wire; Short-circuit in sensor circuit; Temperature exceeding +50°C or below -50°C
What actually causes this:
Loose sensor connection or damaged thermistor
First Thing to Check
Check if sensor connector is fully inserted on Main PCB
Parts Involved
How to Fix
- 1
Check sensor housing attachment
- 2
Verify Main PCB CN30 pins 1 and 3 voltage
- 3
Measure resistance at sensor check point #2
- 4
Verify voltage is within 4.5V~1.0V range
Other Error Codes for RF22K938AA
Fridge fan motor is not operating
Cool Select fan motor is not running
I/O Expander is not responding to main board
Freezer fan motor is not working
Main and panel boards are not communicating
Compressor inverter is not communicating with main board
Fridge defrost sensor is not working
Freezer defrost sensor is not responding