Error Code 40
The ice maker's internal fan is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 40
What This Means
Ice maker fan motor connector disconnected; Ice maker fan motor defective; Ice maker module defect; Wiring harness damaged
What actually causes this:
The ice maker fan motor failed inside the ice maker unit
First Thing to Check
Check if ice production has stopped — no fan means no new ice will be made
Parts Involved
How to Fix
- 1
1. Check voltage at Main PCB CN52 pins 1-6 should be between 7V to 12V
- 2
2. Verify ice maker fan motor connector is seated
- 3
3. Listen for fan noise in ice maker
- 4
4. Replace ice maker assembly if fan is defective
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