Error Code 84
Compressor motor is locked up and won't turn
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 84C
What This Means
Compressor piston or rotor mechanically jammed; Liquid slugging (refrigerant/oil mixture preventing rotation); Internal mechanical failure; Inverter not providing adequate drive current; Low input voltage preventing sufficient motor current
What actually causes this:
Compressor internal mechanical failure or frozen refrigerant
First Thing to Check
Listen for buzzing or clicking sounds from the compressor
Parts Involved
How to Fix
- 1
1. Check input voltage at power cord — should be approximately 115V AC
- 2
2. If voltage is normal, check inverter DC 15V output — must be at least 13.5V
- 3
3. Check solder joints on Inverter PCB
- 4
4. Listen for compressor mechanical sounds — grinding indicates internal damage
- 5
5. Check compressor power connectors are seated properly
- 6
6. If all power and inverter checks are normal, compressor is mechanically failed
Other Error Codes for RF28N9780
Freezer temperature sensor malfunction
Room temperature sensor not working
Ice maker temperature sensor failure
Fridge temperature sensor is not responding
Convertible zone temperature sensor failure
Ice storage area temperature sensor malfunction
Freezer defrost sensor is faulty
Convertible zone defrost sensor malfunction