ECV (Electric Control Valve)
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of HYUNDAI MOTOR AMERICA
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The ECV (Electric Control Valve) is installed in the A/C compressor.
The A/C control unit (module) minimizes the compressor cycling by controlling the duty of the ECV according to the load of cooling.
It helps reduce load on the compressor, improve fuel efficiency and enhance cooling performance.