Error Code 24
The freezer defrost heater is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 24
What This Means
Defrost heater connector disconnected; Defrost heater burned out or open circuit; Temperature fuse or bimetal opened; Main PCB relay defect; Wiring harness damaged
What actually causes this:
The heating element failed or the protection fuse/thermostat opened
First Thing to Check
Check if frost is excessive in the freezer — no defrost heating causes severe frost buildup
Parts Involved
How to Fix
- 1
1. After separating Main PCB CN70_1 wire, measure resistance between CN70_1-7 and 3
- 2
2. Normal resistance should be 63 ohm (or 230 ohm) ± 7%
- 3
3. 0 ohm indicates heater short circuit
- 4
4. Infinite ohm indicates heater or wire open circuit (must power off first)
- 5
5. Check temperature fuse and bimetal integrity
Other Error Codes for RF28M9580
The freezer fan is not working
The main control board can't talk to the display
The ice bucket heater is not working
The FlexZone compartment has gotten too warm
The humidity monitoring sensor is not working
The outdoor temperature sensor is not working
The FlexZone defrost sensor is failing and defrost cycles may not work
The freezer defrost sensor is failing and defrost cycles may not work