Powerwall is a rechargeable home battery system that stores energy from solar or from the grid and makes it available on demand. It can power your home during the night or back up your home in the event of a power outage. With its built-in battery inverter, Powerwall is compact and easy to integrate into your home.

Your Powerwall may require some basic troubleshooting from time to time. Some issues can be resolved from the convenience of your home, without the need for additional technician assistance. If you receive an alert, identify your issue below and follow the applicable troubleshooting instructions. You can also review your Powerwall owner documents for additional information. 

Gateway Offline: 
Any of the following may indicate that your Gateway is offline, leaving you unable to view your energy data in the Tesla app. The ‘Power Flows’ screen in the app is grayed out or blank. Your Gateway is making a beeping sound. The LED light on the right side of your Powerwall is flashing rapidly. 

Meter Offline: 
Any of the following may indicate that your meter is offline, leaving you unable to view your power flows or energy data in the Tesla app. The ‘Power Flows’ screen in the app is grayed out or blank. Your battery storage level has been at 0% for multiple days. Note: Do not troubleshoot during a grid outage or in extreme weather conditions. 

Breaker Open: 
The following may indicate that your breaker is open, leaving your Powerwall unable to store energy. You receive a ‘Breaker Open’ alert in the app. The LED light on the right side of your Powerwall is not turning on. Note: Do not troubleshoot if there are any signs of heat damage (smoke, burning smell or any other signs of burning) to the breaker box. Reach out to Customer Support if you detect heat damage. 

Source: 
Tesla.com