Samsung Air Conditioner Error Code E246

Error code E246 on a Samsung air conditioner indicates a fault in the outdoor unit's condenser outlet temperature sensor, also called the condenser out sensor. This sensor is a thermistor that monitors the refrigerant temperature leaving the condenser coil. The unit's self-diagnosis system has detected that the sensor signal is outside the expected range, which typically points to either a short circuit (signal reads abnormally low resistance) or an open circuit (signal reads abnormally high or infinite resistance). This code is specifically flagged during try-run mode, which is the system's startup self-check sequence.

The condenser out sensor plays a critical role in regulating compressor operation, refrigerant flow, and overall system protection. When this sensor fails or sends an out-of-range signal, the control board cannot accurately assess condenser performance, so it triggers E246 and may restrict or halt operation to prevent damage to the refrigerant circuit.

The first diagnostic step is to inspect the physical connection between the sensor and the outdoor unit control board. Loose, corroded, or damaged connector pins are among the most frequent causes. If the connection appears intact, the technician should measure the sensor's resistance across its terminals and compare it against the temperature-resistance curve specified for that sensor type. A shorted sensor will read near zero ohms, while an open sensor will read out of range or show no continuity. Wiring harness damage due to vibration, pests, or weather exposure can also produce intermittent faults that trigger this code.