Samsung Refrigerator Error Code 87

Error code 87 on a Samsung refrigerator means the compressor is operating at or detecting a high DC voltage level. The Main PCB is responsible for supplying regulated DC power to the compressor, and this code indicates that voltage has exceeded the acceptable range. The refrigerator triggers this alert to prevent compressor damage. A technician should measure the DC voltage from the Main PCB to the compressor to confirm the fault source.

The error itself is a protective alert, meaning the refrigerator's control system has detected an overvoltage condition and flagged it to prevent further damage. Allowing the refrigerator to continue operating with this fault unresolved could risk damaging the compressor, which is a costly component. You should address this error promptly and avoid repeatedly attempting to clear and restart the unit without first identifying the cause.

Repair costs depend on which component is at fault. Replacing the Main PCB typically costs in the range of $150 to $400 or more including parts and labor, while compressor replacement is significantly more expensive, often ranging from $400 to $700 or higher depending on the model and service provider. If the issue is traced to a wiring problem or high household line voltage, the cost may be considerably lower. Getting a diagnostic visit from a technician will help clarify the exact repair needed.

Diagnosing error code 87 requires measuring live DC voltage at the compressor harness, which involves working near high-voltage components. This is not a straightforward DIY repair and is best handled by a qualified appliance technician. If you are experienced with electrical diagnostics and safe multimeter use, you can begin by inspecting the wiring harness between the Main PCB and the compressor for visible damage before calling a professional.

A reset may temporarily clear the error code display, but it will not resolve the underlying cause of the overvoltage condition. If the Main PCB, wiring, or compressor has a fault, the code will return once the refrigerator resumes normal operation. A proper repair requires diagnosing and correcting the root cause before the error will stay cleared.