Samsung Refrigerator Error Code Comp Over Voltage Error

The Comp Over Voltage Error means the voltage supplied to the compressor inverter board has exceeded the maximum safe limit of AC 155V for models rated at AC 110 to 127V. The refrigerator's protection system shuts down compressor operation to prevent damage. This can result from an actual overvoltage condition at the power supply or from a fault within the PCB itself.

The error itself indicates the refrigerator's protection circuit has already responded to a potentially damaging condition. The compressor is protected while the fault is active. However, if the root cause is true overvoltage at the electrical supply, continued operation without addressing it could damage other appliances on the same circuit. Verify your outlet voltage before resetting and restarting the refrigerator.

Repair costs depend on the root cause. If the issue is simply utility overvoltage and a surge protector or dedicated circuit resolves it, costs can range from $20 to $100 for protective hardware. PCB solder rework by a technician typically runs $75 to $200 in labor. Inverter board replacement parts generally range from $80 to $250 or more depending on the model, plus labor if professionally installed.

Some causes are DIY-friendly. You can check the outlet voltage with a multimeter and inspect the power supply for surge events. If the input voltage is within normal range, the issue may be a faulty PCB with bad solder joints, which an experienced technician can reflow or repair. Inverter board replacement is also within reach for skilled DIYers, but working near live electrical components carries risk and should be approached carefully.

A power reset, typically unplugging the unit for a few minutes, may clear the error code temporarily. However, if the underlying cause, whether overvoltage at the supply or a defective PCB, is not corrected, the error will return. Clearing the code without diagnosing and fixing the root cause is not a permanent solution.