The remote control (often featuring glow-in-the-dark buttons) allows you to cycle through several operating modes:
Only the fan runs for air circulation; the compressor remains off to save energy. Voltas Vertis Plus Split Ac User Manual
Standard cooling mode. You can manually adjust the temperature, typically between 16°C and 30°C, using the "+" and "-" buttons. typically between 16°C and 30°C