Samsung Air Conditioner Error Code E461

The E461 error code on a Samsung air conditioner indicates a low-voltage or low-amperage fault detected by the compressor current transformer (CT) sensor. This sensor continuously monitors the electrical current draw of the compressor during operation. When the CT sensor reads a current value below 4 amps for a sustained period of 5 or more hours, the control board interprets this as an abnormal operating condition and triggers the E461 fault. The system expects the compressor to draw a certain minimum current load during normal operation, so a persistently low reading signals that something is preventing the compressor from running correctly or at all.

The most likely cause is a problem in the compressor circuit itself rather than a failed sensor. A loose, corroded, or disconnected compressor connection wire is the first component to inspect, as a poor electrical connection will result in reduced or absent current flow through the circuit. The compressor magnet switch, sometimes called the contactor or magnetic contactor, is another primary suspect. If this switch has burned contacts, a faulty coil, or is not engaging properly, it will interrupt or significantly reduce current flow to the compressor, producing the low-amperage reading the CT sensor detects.

In less common situations, the CT sensor itself may be defective and reporting an inaccurately low current value even when the compressor is drawing normal amperage. A failed or seized compressor that is not running at all would also produce a near-zero current reading, which would trigger this code after the 5-hour threshold. Technicians should verify wiring integrity and contactor operation before condemning the compressor or sensor, as wiring and switching faults are far more common and significantly less costly to repair.