Samsung Air Conditioner Error Code OUTDOOR_RED_FLICKER_GREEN_FLICKER

This error code indicates an OLP (Overload Protector) sensor fault on the outdoor unit, specifically an open or short circuit in the sensor circuit. The outdoor control board is not receiving a valid signal from the OLP temperature sensor, which monitors the compressor for overload conditions. The system shuts down to protect the compressor until the sensor fault is resolved.

No. The OLP sensor is a safety component designed to protect the compressor from overload and overheating conditions. When this error is active, the system has already shut down the outdoor unit as a protective measure. Attempting to bypass or repeatedly reset the unit without resolving the underlying fault can cause compressor damage, which is a much more costly repair.

A power reset may temporarily clear the error display, but the code will return if the underlying OLP sensor fault is still present. Because this is a hardware fault involving a failed or disconnected sensor, resetting the unit does not repair the sensor circuit. The error will continue to reappear until the wiring, connector at CN52, or the sensor itself is inspected and repaired.

A knowledgeable DIYer can start by inspecting the connector at CN52 on the outdoor control board to check for loose or corroded connections, which sometimes resolves the fault. However, testing sensor resistance, handling refrigerant-adjacent components, and replacing control board parts generally requires proper tools and technical knowledge. If reseating the connector does not clear the error, a qualified HVAC technician should complete the diagnosis and repair.

Repair costs vary depending on the cause. Replacing the OLP sensor is typically the least expensive fix, with parts and labor often ranging from $100 to $250. If the outdoor control board requires replacement, total costs can range from $300 to $600 or more depending on the unit model and local labor rates. A diagnostic visit is usually needed first to confirm the exact faulty component.