How do I fix error code COMP-OVER-VOLTAGE on a Samsung refrigerators?

1. undefined: Check input voltage at wall outlet — should not exceed 127V AC 2. undefined: Inspect inverter PCB for solder shorts on bottom side around R309, R310, R311 3. undefined: If wall voltage is normal, replace inverter PCB

Samsung Refrigerators2020–present

Error Code COMP-OVER-VOLTAGE

Q: What does error code COMP-OVER-VOLTAGE mean on a Samsung refrigerators?

Supply voltage to compressor is too high Excessive input voltage (above AC 155V for 120V models); Shorted DC link divider resistors R309, R310, or R311 on inverter PCB; Power surge

Supply voltage to compressor is too high

Moderate

Address soon - your appliance may not work properly

Also displayed as: F and R blink — Over Voltage pattern

What This Means

Excessive input voltage (above AC 155V for 120V models); Shorted DC link divider resistors R309, R310, or R311 on inverter PCB; Power surge

What actually causes this:

The voltage coming into the refrigerator is too high — possibly from a power surge or a wiring problem in the house.

First Thing to Check

Check whether other appliances or lights in the house are experiencing abnormal brightness or behavior that could indicate an over-voltage condition.

Parts Involved

Inverter PCBPower supply

How to Fix

1
Check input voltage at wall outlet — should not exceed 127V AC
2
Inspect inverter PCB for solder shorts on bottom side around R309, R310, R311
3
If wall voltage is normal, replace inverter PCB

This Error Applies To

Samsung RF28T5 Series Refrigerators (2020) (2020–present)

Service manual exact match: RF28T5101SR/AAService manual exact match: RF28T5A01S9/APService manual exact match: RF28T5021S9/EMService manual exact match: RF28T5001S9/MLService manual exact match: RF28T5021B1/COService manual exact match: RF28T5A01SR/AAService manual exact match: RF28T5021SR/AAService manual exact match: RF28T5001SR/AA