Samsung Air Conditioner Error Code E319

E319 indicates a suction temperature sensor error, specifically that the sensor circuit has been detected as either open (broken connection) or short (unintended electrical contact). The suction temperature sensor monitors refrigerant returning to the compressor, and this reading is essential for safe compressor operation. The system shuts down when it detects this fault to prevent compressor damage from running without valid temperature data.

No, the unit should not be operated while E319 is active. The suction temperature sensor provides critical protection data for the compressor, and running the system without a valid sensor reading can lead to compressor damage. The unit will typically shut itself down automatically when this error is triggered, which is a protective measure you should not attempt to bypass.

Repair costs vary depending on the cause. If only a connector needs reseating, there may be no parts cost and a minimal service call fee. A replacement suction temperature sensor is generally an inexpensive part, so sensor replacement including labor typically falls in the range of $75 to $200. If the PCB requires replacement, costs can range from $200 to $600 or more depending on the unit model and labor rates in your area.

A homeowner can safely check whether the sensor connector has simply come loose from the control board and reseat it. However, measuring sensor resistance, tracing wiring faults, or replacing the sensor or PCB involves working with internal components and refrigerant-side parts that typically require a qualified technician. If reseating the connector does not clear the fault, professional service is the recommended next step.

A power reset may temporarily clear the error code, but if the underlying sensor fault still exists, E319 will return once the unit attempts to operate. The fault must be diagnosed and the root cause corrected, whether that is a loose connector, damaged wiring, or a failed sensor, before the error will stay cleared permanently.