Samsung Air Conditioner Error Code OUTDOOR_YELLOW_GREEN_FLICKER_RED_FLICKER

This error code indicates a DC-Link voltage sensor error in the outdoor unit. The DC-Link is part of the inverter drive circuit that supplies stable DC voltage to the compressor. When the control board detects that the sensor signal is missing, erratic, or out of range, it triggers this fault and stops the compressor to prevent damage. The outdoor unit's indicator LEDs display this specific flicker pattern to communicate the fault code.

A power reset may temporarily clear the displayed error, but if the DC-Link voltage sensor or the outdoor control board is genuinely faulty, the error will return once the unit attempts to operate again. A reset alone does not address the underlying hardware failure. Persistent recurrence after a reset confirms that a component repair or replacement is needed.

Repair costs depend primarily on the price of the outdoor control board and local labor rates. Outdoor control boards for Samsung inverter units typically range from $150 to $400 or more depending on the model, and labor for diagnosis and replacement can add $100 to $250. Total repair costs commonly fall in the range of $250 to $650, though complex installations or additional parts needs can increase that estimate.

The primary repair is replacement of the outdoor control board, which involves working inside the outdoor unit near high-voltage inverter components. Technicians should verify the incoming supply voltage is correct before replacing the board, as that check is safe and straightforward. However, handling the control board and DC bus components requires familiarity with high-voltage safety procedures, so most homeowners should contact a qualified HVAC technician.

The unit will typically shut down the compressor automatically when this error is active, preventing normal operation. You should not attempt to force the unit to run through repeated resets while the fault persists. Continuing to cycle power repeatedly without addressing the root cause can stress the inverter components further and potentially worsen the damage.