Error Code COMP-UNDERVOLT
Supply voltage is too low for the compressor to run safely
Moderate
Address soon - your appliance may not work properly
Also displayed as: Inverter LED blink: Under Voltage pattern
What This Means
House supply voltage dropped below AC 106V (for 110–127V models); Extension cord or wiring causing voltage drop; Utility power fluctuation
What actually causes this:
The electrical outlet is providing less voltage than required, possibly due to a weak circuit, extension cord, or utility power problem.
First Thing to Check
Plug a voltmeter into the same outlet and check that it reads at least 106V AC.
Parts Involved
How to Fix
- 1
Measure AC input voltage at the refrigerator power outlet
- 2
Error triggers when input is AC 106V or lower (110–127V model)
- 3
If voltage is low, check house wiring and outlet
- 4
Do not use extension cords
This Error Applies To
Samsung DRF36C Series Refrigerators (2022) (2022–present)
Related Error Codes
Internal I/O expander chip on main board has a communication fault
External temperature sensor is unplugged or has failed
Freezer temperature sensor is disconnected or out of range
Freezer evaporator fan is not running when it should be
Freezer defrost sensor is disconnected or reading out of range
Condenser fan motor in the machine compartment is not running
Freezer defrost heater or safety cutout has failed or wiring is open
Fridge temperature sensor is disconnected or out of range