---
title: ‘Fault indicator’ LED on your Comms Box
description: Any faults with the ZEB will be shown on the Comms Box, and it's a good place to check first if you notice problems with your ZEB. The most common issues can be fixed with these steps:
---

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September 14, 2026

# ‘Fault indicator’ LED on your Comms Box

## Check the ZEB Comms Box first for faults

Any faults with the ZEB are displayed on the Comms Box, making it the first place to check if you notice issues. Common problems can be addressed as follows:

![](https://helpcentre.tepeo.com/hs-fs/hubfs/image-png-3.png?width=670&height=522&name=image-png-3.png)

1. The ‘Power’ LED is not illuminated – this means no power is reaching the ZEB: 
     1. Check if the rest of your home has power;
     2. If the rest of your home has power but the ZEB does not, restart your ZEB.
     3. If the problem persists, contact our Support Team at [**www.tepeo.com/contact-us**](https://www.tepeo.com/contact-us).
2. If the "Connection" LED is not illuminated, the ZEB is not connected to the internet. Follow the connectivity troubleshooting steps to resolve the issue.
3. If the "Fault indicator" LED is flashing, something is preventing the ZEB from charging or discharging. Restart your ZEB, and if the issue persists, contact our Support Team at [**www.tepeo.com/contact-us**](http://www.tepeo.com/contact-us)

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