Error Code FF-DEFROST
Fridge defrost heater not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: LED blinks
What This Means
Defrost heater wiring broken; Heater element burned out or shorted; Bimetal thermostat failure; Thermostat protector open circuit
What actually causes this:
Defrost heater burned out or thermostat stuck open
First Thing to Check
Check fridge evaporator for frost and ice accumulation
Parts Involved
How to Fix
- 1
1. Power off refrigerator
- 2
2. Separate MAIN PCB CN20 wire from PCB
- 3
3. Measure resistance between CN20-5 and CN20-7
- 4
4. Expected resistance: 120 ohm ± 7%
Other Error Codes for RF24R7201SA
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