the specific display code "E2" for a Voltas Window AC 1.5t was not listed in the official error code documentation. However, error codes can vary between different models and versions, and new updates might have been released since then.
In general, an error code on an air conditioner's display indicates that there is an issue with the unit that requires attention or repair. If you see the "E2" display, it is best to refer to the user manual or contact Voltas customer support directly to get accurate and up-to-date information on what the error code means and how to troubleshoot or resolve it.
Avoid attempting any repairs yourself if you are not familiar with air conditioner systems, as it could lead to further damage or void the warranty. Always consult with a trained technician or the manufacturer's support team for assistance with troubleshooting and repairs.