Samsung Air Conditioner Error Code E268

E268 is a Sump Sub 2 breakaway error, indicating that the oil temperature sensor has separated or disconnected from the compressor sump. The air conditioner monitors oil temperature to protect the compressor, and when the sensor signal is lost, the unit stops operating and displays this code. The first step is to check whether the sensor has physically come loose from the compressor and reseat it if so.

You should not continue running the unit while E268 is active. The oil temperature sensor exists to protect the compressor from overheating or operating under unsafe oil conditions. Running the system without a valid sensor reading removes that protection and risks compressor damage, which is a significantly more expensive repair.

A power reset may temporarily clear the fault display, but the E268 error will return if the underlying issue, specifically the separated or faulty oil temperature sensor, has not been resolved. Resetting without addressing the root cause does not fix the problem and could allow the system to run without proper compressor protection. The sensor must be properly seated and functional before the code will stay cleared.

A knowledgeable DIYer or technician can address this error by locating the oil temperature sensor on the compressor, checking that it is properly seated, and inspecting the wiring for damage. If the sensor has simply come loose, reseating it may resolve the fault without any parts. However, if the sensor or wiring is damaged, replacement parts and some technical skill will be needed, and working near a compressor in a sealed refrigerant system should be approached carefully.

If the sensor only needs to be reseated, the cost may be limited to a service call fee, typically in the range of $75 to $150. If the oil temperature sensor itself requires replacement, parts and labor combined can range from $150 to $350 depending on the model and labor rates in your area. A control board replacement, if needed, would cost considerably more.