An E4 code typically indicates the unit has entered "defrost mode" because it became too cold, which may sometimes be caused by a faulty temperature sensor.
To reset the remote, remove the batteries and hold the reset button (often found behind the battery cover or on the front panel) for 5–10 seconds. Efficiency Tips AC Remote Guide: Modes, Symbols & Smart Usage - Voltas
The unit is equipped with high-capacity anti-dust filters. For optimal performance, these should be cleaned regularly to prevent dust buildup. Voltas Vertis Plus Split Ac User Manual
Optimizes compressor performance to reduce electricity consumption. Essential Operations
Dehumidifies the room, making it ideal for the monsoon season. An E4 code typically indicates the unit has
The remote control (often featuring glow-in-the-dark buttons) allows you to cycle through several operating modes:
Provides rapid cooling by instantly boosting the compressor and fan speed. For optimal performance, these should be cleaned regularly
Only the fan runs for air circulation; the compressor remains off to save energy.