Samsung Air Conditioner Error Code YEL_FLICKER_RED_FLICKER_GRN_ON

This LED indicator pattern signals a DC-Link voltage sensor error on the outdoor unit. The DC-Link is the high-voltage DC bus inside the inverter circuit that powers the compressor. The sensor monitoring this bus has reported a fault, causing the system to shut down. The outdoor control board is the component responsible for this sensing function and is the primary part to replace.

No. The unit has shut itself down as a protective response to this fault. Attempting to force the system to operate with a DC-Link voltage sensor error could cause further damage to the compressor or other inverter components. Leave the unit off until the outdoor control board has been inspected and replaced if necessary.

A power reset may temporarily clear the fault display, but the underlying DC-Link voltage sensor failure on the outdoor control board will cause the error to return once the unit attempts to operate. A reset is not a repair. The outdoor control board needs to be inspected and replaced to resolve the fault permanently.

This error involves high-voltage DC circuitry inside the outdoor unit, which presents serious shock hazards. A qualified HVAC technician should perform the diagnosis and board replacement. A homeowner can check that the outdoor unit disconnect is secure and that no obvious wiring is loose, but internal board work requires professional service.

The primary repair involves replacing the outdoor control board, which typically costs between $250 and $600 for the part depending on the model. Adding labor, total repair costs generally fall in the range of $350 to $900. Getting a diagnostic visit from a certified Samsung HVAC technician will give you a more precise estimate for your specific unit.