Error Code 40
Ice compartment fan motor is not running
Moderate
Address soon - your appliance may not work properly
Also displayed as: Error 40
What This Means
Ice room BLDC fan motor failed; No 7V-12V supply at CN32-9 to CN32-10; Pulse feedback absent at CN32-8; Ice blocking fan blades; Connector loose
What actually causes this:
The fan that keeps the ice maker compartment cold has stopped working, preventing ice production.
First Thing to Check
Remove the ice bucket and check if the small fan in the ice maker compartment is running.
Parts Involved
How to Fix
- 1
Check voltage at MAIN PCB CN32-9 to CN32-10: should be DC 7V to 12V
- 2
Check pulse signal at CN32-8 to CN32-10 (reads ~2-3V with multimeter when running)
- 3
Ensure ice compartment temperature is in operating range
This Error Applies To
Samsung RF23M85 Series Refrigerators (2017) (2017–present)
Related Error Codes
Humidity sensor in the fridge compartment has failed
Ice bucket compartment heater has an open or short circuit
Mid drawer damper heater has an open or short circuit
Auto-fill water tank has detected an overflow
Refrigerator defrost sensor has failed or disconnected
Freezer defrost sensor has failed or lost connection
Freezer temperature sensor has failed or lost connection
Ambient room temperature sensor has failed