Samsung Refrigerator Error Code Compressor under voltage

This error means the refrigerator's control system has detected that the voltage at the compressor is too low for safe or proper operation. The fault is monitored through a sensing circuit that includes resistor R513 on the control or inverter board. When voltage falls below the required threshold, the board logs this code to protect the compressor from damage. The refrigerator may stop cooling until the fault is resolved.

Running the refrigerator while this error is active is not recommended. The compressor may not operate correctly under low voltage conditions, which can lead to inadequate cooling and potential motor damage over time. Food safety may also be compromised if the refrigerator cannot maintain proper temperatures. Address the fault promptly to avoid further damage.

Repair costs vary depending on the root cause. If the issue is a faulty resistor or board-level component, repair costs including labor typically range from $100 to $300. Inverter board replacement can range from $150 to $400 depending on the model and whether the work is done by a technician. If the compressor itself has failed, costs can range from $400 to $700 or more.

Some causes, like a low household supply voltage or a loose wiring connection, can be addressed without specialized tools. However, diagnosing and replacing a faulty resistor such as R513 or an inverter board requires comfort with electronics and a multimeter. If you are not experienced with appliance electronics, it is advisable to have a qualified technician handle board-level repairs.

A reset may temporarily clear the error code from the display, but if the underlying cause, such as a faulty R513 resistor, a failing inverter board, or a supply voltage issue, has not been corrected, the fault will return. Resetting without diagnosing the root cause does not constitute a repair and may allow the problem to worsen.