Error Code 2
Fresh food compartment not reading correct temperature
Moderate
Address soon - your appliance may not work properly
Also displayed as: 2 (Fridge LED blinks)
What This Means
Fridge thermistor disconnected from MAIN PCB connector CN51; Fridge thermistor defective (open or shorted); Bad wiring between sensor and MAIN PCB; MAIN PCB defect
What actually causes this:
Temperature sensor is disconnected or broken
First Thing to Check
Make sure the wire connector is fully plugged in
Parts Involved
How to Fix
- 1
1. Enter self-diagnostic mode via Engineer Mode (select '3')
- 2
2. Measure voltage at MAIN PCB CN51 pin 14 to pin 13 — normal range: 1.0V to 4.5V
- 3
3. Disconnect CN51 and measure resistance between CN51 pins 14 and 13 — compare to temperature table
- 4
4. If 0 ohm: sensor is shorted. If infinite ohm: sensor or wire is open
- 5
5. Check MICOM input voltage at IC01 MICOM pin 8 and resistor R364 on PCB
- 6
6. If all tests pass, replace MAIN PCB
Other Error Codes for RF22A4220SR
Control panel cannot talk to main circuit board
Main board cannot control the compressor
Freezer is not cold enough
Cannot detect compressor motor position
Inverter board is too hot
Humidity level cannot be monitored
Water in dispenser tank cannot be heated
Compressor protection circuit activated