Error Code R
Fridge temperature sensor not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: LED blinks
What This Means
Broken temperature sensor wiring; Thermistor 502AT failure; Connector CN20 pin 9-11 open or shorted
What actually causes this:
Temperature sensor wiring loose or thermistor has failed
First Thing to Check
Check connector CN20 pins 9-11 for loose or bent pins
Parts Involved
How to Fix
- 1
1. Check voltage at MAIN PCB CN20-9 to CN20-11
- 2
2. Expected voltage range: 4.5V to 1.0V
- 3
3. If out of range, test thermistor resistance
Other Error Codes for RF24R7201EO
Freezer temperature sensor not working
Water overflowing from ice maker or water dispenser
Compressor will not start
Fridge getting too warm
Control panel not communicating with main board
Ice dispenser duct not heating
IO expander chip not responding
Freezer defrost heater not heating