Voltas window air conditioners do not have a standardized error code system across all models. Error codes can vary depending on the specific model and its manufacturer. Therefore, it's essential to refer to the product manual or contact the Voltas customer support service to get accurate information about the "E1" error code for your particular model.
In general, error codes like "E1" in air conditioners often indicate a fault or malfunction in the unit. It could be related to issues with the temperature sensor, thermistor, or other components. To diagnose and fix the problem correctly, it's best to consult the official documentation or seek assistance from qualified technicians.