Samsung Air Conditioner Error Code E415

E415 is a sump-main sensor breakaway error on Samsung air conditioners equipped with a digital compressor. It means the control system has detected that the temperature sensor mounted on the compressor sump has become separated or disconnected. The unit shuts down to prevent the compressor from running without proper temperature monitoring. Reassembling or reconnecting the sensor and clearing the fault is the recommended first step.

No, you should not continue operating the unit while E415 is active. The sump sensor monitors compressor temperature as a protective measure, and running the compressor without reliable temperature data can lead to overheating and serious compressor damage. The unit is designed to shut down when this fault is detected, and it should remain off until the sensor issue is resolved.

If the sensor simply needs to be reattached, the repair may cost little to nothing beyond a service call fee, which typically ranges from $75 to $150 depending on your area. If the sensor itself needs to be replaced, parts and labor combined usually range from $100 to $300. Control board replacement, if required, is the most expensive scenario and can range from $300 to $600 or more including labor.

Start by powering down the unit and inspecting the digital compressor sump sensor to see if it has physically separated from the compressor body. If it has, reattach it securely to its mounting location, ensure the wiring connector is fully seated, and then restart the unit. If the error returns after reattaching the sensor, check the wiring harness for damage and test the sensor itself for proper function.

A simple power reset will not permanently clear E415 if the underlying sensor issue is not resolved. The fault will return as soon as the unit attempts to operate and the control system checks for a valid sump sensor signal. The sensor must be physically reattached and all connections confirmed secure before the error will stay cleared after a reset.