Samsung Air Conditioner Error Code OUTDOOR_YELLOW_GREEN_ON

This code indicates a DC-link overvoltage error in the outdoor unit. The DC-link is the internal DC bus used by the inverter drive to power the compressor, and the system detected that its voltage exceeded safe operating limits. The outdoor control board is the first component to inspect when this fault appears.

No, the unit should not be operated while this fault is active. The system shuts itself down specifically to protect internal electronics from overvoltage damage, and attempting to bypass or ignore the fault could result in permanent damage to the inverter drive components or create an electrical hazard.

Repair costs vary depending on the root cause. If the fix involves tightening connections or addressing a supply voltage issue from the utility, costs may be limited to a service call fee, typically in the range of $75 to $150. If the outdoor control board requires replacement, parts and labor combined can range from $300 to $700 or more depending on the unit model and local labor rates.

Some basic checks, such as verifying the incoming supply voltage and inspecting wiring connections at the outdoor unit, can be done by a knowledgeable DIYer. However, diagnosing and replacing the outdoor control board or inverter components involves high-voltage DC circuits that carry significant shock risk, so those steps are best left to a licensed HVAC or appliance technician.

A power reset may temporarily clear the fault and allow the unit to restart, but if the underlying cause such as high supply voltage or a failing control board is not corrected, the error will return. Clearing the code without diagnosing the root cause risks damaging the outdoor unit's power electronics.