Understanding the OV-G-V Alarm

Understanding the OV-G-V Alarm

Understanding the OV-G-V Alarm on Your Solis Solar Inverter

Solis inverters are known for their reliability, but sometimes they present an error code . One such code is OV-G-V, which means the inverter detected a voltage spike from the power grid. This post explains what causes this issue and how to troubleshoot it.

What Causes an OV-G-V Alarm?

The OV-G-V alarm indicates high voltage coming from the utility company. This can happen for a few reasons:

  • Power Grid Fluctuations: Sometimes, the grid voltage can temporarily spike due to various factors.
  • Incorrect Inverter Settings: The inverter might have the wrong upper voltage limit set.
  • Local Grid Issues: In some areas, the power grid itself might have problems causing constant high voltage.
  • Faulty Inverter (Less Likely): In rare cases, a malfunction within the inverter might trigger a false over-voltage reading.

Fixing the OV-G-V Error

Here’s what to do when you see the OV-G-V alarm:

  1. Check the Grid Voltage: Use a voltmeter to measure the voltage at the inverter’s connection point. Compare it with the acceptable range in your inverter’s manual. See if the high voltage is temporary or constant.

  2. Review Inverter Settings: Access the inverter’s settings (through the display or app) and ensure the upper voltage limit is set according to your local grid standards. Contact your utility company if you’re unsure about the correct values.

  3. Inspect the Inverter: Look for any loose wires or damage on the inverter that could be causing voltage problems.

  4. Contact Your Utility Provider: If the high voltage persists, report the issue to your utility company. They might need to investigate the local grid.

  5. Seek Professional Help: If the problem continues after following these steps, contact a qualified technician for a more thorough inspection.


The OV-G-V alarm is a safety feature that protects your solar system from high voltage. By understanding the causes and following these steps, you can often fix the issue yourself. Remember, regular maintenance and communication with your utility company can help prevent future problems. If you’re not comfortable troubleshooting yourself, don’t hesitate to call a professional.

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