When set to ECON mode, the A/C compressor shuts off at higher temperature than the A/C mode.
eg: if you set to A/C mode, the compressor shuts itself by reaching the Cooler to Celsius 9, but the ECON mode will shut the compressor by reaching the cooler at a higher temperature like Celsius 12. So less energy needed at the ECON mode than A/C mode.
comments are welcome...