Error Code 9
Compressor cannot start when commanded
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 81
What This Means
Inverter PCB soldering defect; Short circuit in inverter circuit; DC 16V output below 13.5V; Compressor mechanical failure; Refrigeration cycle blockage; Starting capacitor failure
What actually causes this:
Power board failed or compressor motor stuck
First Thing to Check
Try forced operation mode to diagnose
Parts Involved
How to Fix
- 1
Check inverter PCB for soldering defects and shorts
- 2
Measure DC 16V output - should be above 13.5V
- 3
Run forced operation mode and listen for compressor startup
- 4
Verify compressor mechanical freedom - spin rotor by hand if accessible
- 5
Check refrigeration cycle for restrictions
This Error Applies To
Samsung RR39M73 Series Refrigerators
Related Error Codes
Condenser fan motor not operating when required
External humidity sensor reading is out of range
Cooling fan motor is not operating properly
Fridge room temperature sensor is malfunctioning
Freezer defrost temperature sensor malfunction detected
Freezer defrost cycle cannot complete properly
Compressor power control module failure
House electrical supply voltage too high