Zappi Installation Limit: Troubleshooting

For users of electric vehicles committed to sustainable energy solutions, the myenergi Zappi stands out as an innovative charging solution.

However, like any technology, users may encounter challenges, one of which is the Zappi Installation Limit problem. In this article, we will explore the potential causes of this issue and provide a step-by-step guide to troubleshooting and resolving it.

Table of Contents

Understanding the Zappi Installation Limit Issue

The Zappi Installation Limit issue manifests as a sudden restriction in charging capabilities, often accompanied by error messages or warnings. To effectively address this problem, it’s crucial to explore potential causes and follow a systematic troubleshooting approach.

1. Recent Changes and Upgrades:

Recent changes or upgrades, such as alterations to the power meter or firmware upgrades to the Zappi unit, may trigger the Installation Limit issue.

Solution: Check for recent changes and, if identified, consider reverting to the previous configuration to pinpoint the specific cause.

2. Grid Configuration:

Zappi units are designed to adapt to different grid configurations, including single-phase and three-phase setups. Misconfigurations can lead to the Installation Limit issue.

Solution: Verify the Zappi configuration settings to ensure they match the electricity supply—whether single-phase or three-phase.

3. CT Clamp Installation:

Current Transformers (CT) clamps play a crucial role in measuring grid power accurately. Incorrect installation or interference during recent meter changes can impact their functionality.

Solution: If there were recent changes to the power meter, inspect the CT clamps for proper installation. Consult with an electrician if needed.

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4. Weak Radio Link:

A weak radio link between the Zappi and the Harvi unit, especially the grid Harvi, has been reported.

Solution: Check the signal strength between the Zappi and Harvi units. If a weak connection is detected, consider alternatives such as using a CAT 6 outdoor cable instead of relying on wireless communication.

5. Individual CT Readings:

Variations in load and connection strength among the CTs may contribute to the Installation Limit issue.

Solution: Monitor the readings on each CT, ensuring they are consistent. If anomalies persist, seek assistance from the myenergi support team.

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6. Firmware Update:

Firmware updates, attempted by some users as part of their troubleshooting process, can address certain issues.

Solution: Ensure firmware updates are performed correctly by following manufacturer guidelines. Reach out to support for advice if needed.

7. Hub Functionality:

Understand that the Hub primarily serves as an internet gateway and not for device-to-device communication.

Solution: Focus troubleshooting efforts on direct communication between Zappi and Harvi units rather than involving the Hub.


Resolving the Zappi Installation Limit issue requires a meticulous approach to troubleshooting, considering recent changes, configurations, and potential signal interferences.

Users facing this problem should systematically explore each aspect discussed in this guide. If issues persist, reaching out to the myenergi support team for specialized assistance is recommended.

As the EV charging landscape evolves, users can fully harness the potential of sustainable and efficient charging solutions provided by products like Zappi by understanding and resolving issues like the Installation Limit problem.