Samsung Air Conditioner Error Code YEL_ON_GRN_ON_RED_FLICKER2

This error code indicates a NO GAS condition, meaning the system has detected that the refrigerant charge is critically low or depleted. It is displayed as a solid yellow light, solid green light, and a flickering red light on the unit. The air conditioner cannot cool or heat effectively without adequate refrigerant, so the system flags this fault to prevent further operation under abnormal pressure conditions.

Running the unit with a critically low refrigerant charge is not recommended. Low refrigerant can cause the compressor to overheat and operate under abnormal pressure conditions, potentially leading to compressor failure, which is a much more expensive repair. It is best to shut the unit off and schedule a service call promptly.

A power reset may temporarily clear the fault display, but the error will return quickly once the system attempts to operate and the pressure sensors detect the low refrigerant condition again. The underlying cause, insufficient refrigerant charge, must be corrected by a certified technician before the error will stay cleared permanently.

Refrigerant work cannot legally be performed by uncertified individuals in the United States. You will need a technician holding EPA Section 608 certification to handle, recover, and recharge refrigerant. The technician should also locate and repair any active leaks before recharging, otherwise the problem will return.

Repair costs vary depending on the cause and severity. A simple refrigerant recharge without a leak repair typically runs in the range of $150 to $400 depending on refrigerant type and regional labor rates. If a leak repair or coil replacement is needed, total costs can range from $300 to over $1,000. Getting a diagnostic quote from a certified technician before authorizing repairs is advisable.