How to Read Solar Inverter Display

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Reading your solar inverter display is essential for monitoring your solar system's performance. Key terms include:

  • Stand By: Not enough DC voltage from the battery or PV source.
  • Fault: An issue with the inverter that needs fixing to avoid energy outages.
  • PV Grid On/In Use: Normal operation, sending energy genearation to the AC electricity grid.
  • PV Charge: Power is within range, charging batteries.
  • Battery Grid On/In Use: Using battery power without a PV source.

To navigate, press buttons below the display to activate it, access the main menu, and scroll through detailed reports. Common issues are shown by error codes like communication failures, overvoltage, and overheating.

How Do I Read My Solar Inverter Display?

Solar energy is increasingly becoming an integral part of our lives, especially as we move towards cleaner energy solutions and off-grid living. One crucial component of any solar power system is the solar inverter. Its primary function is to convert the direct current (DC) electricity stored in a solar battery into alternating current (AC) electricity suitable for household use. Modern solar inverters come equipped with advanced multifunction displays. This allows users to monitor system performance, identify faults, and adjust settings. This guide will help you understand the information displayed on a solar inverter display and how to interpret it effectively.

What is a Solar Inverter Display?

A solar inverter display is typically an LCD screen located on the inverter’s body. It lights up when you turn on the solar panel system or press the “HOME/POWER” button on the dashboard. The display usually shows key information like battery voltage, output voltage, and the current operational status of each component in your solar system.

The solar inverter display is essential for monitoring system performance and making adjustments. The first screen usually shows icons for battery voltage and power output (115V/220V). By using the up and down buttons and the ‘Enter’ option, you can access detailed status information and adjust parameters for each component.

Key Terms on a Solar Inverter Display

To effectively read a solar inverter display, it’s important to understand the terminology used. Here are some common terms and their meanings:

  • Stand By: This indicates that there isn’t enough DC voltage coming from the battery or PV source to the solar inverter. What you’ll see when the inverter isn’t functioning is that the sun isn’t shining on the panels.
  • Fault: This term signals a problem with the solar inverter that needs to be addressed. If not fixed, the inverter will shut down, causing an energy outage.
  • Flash: This occurs when the inverter undergoes a firmware or software update. The update can be done locally via any communication channel or using a wireless communication module to update connected servers.
  • PV Grid On/In Use: This indicates the normal operation of the solar inverter on the grid. The entire production from the PV source is sent to the AC grid, which then distributes it to your local grid station.
  • PV Charge: This means the power produced by the PV panels is within the normal range and charges the inverter’s batteries. No energy remains for grid export or UPS connection.
  • PV Charge + Grid On: This shows that both the PV source and the AC grid are being used. The inverter charges its battery and draws energy from either the grid or the PV system.
  • Battery Grid On/In Use: This indicates that the solar inverter is working without a PV source, using battery power to supply your solar energy system via an AC connection.
  • PV and Battery Grid-On/In Use: This means the inverter is operating without a PV source but with sufficient energy supplied by the battery via an AC connection. The battery discharges, providing power to your solar PV system.

solar inverter display

How to Read

Understanding the terms and statuses displayed on your solar inverter is crucial, but knowing how to navigate and read the display is just as important. Here’s a step-by-step guide:

  1. Activate the Display: Press any one of the four buttons below the inverter display to light up the screen and turn on the backlight.
  2. Access the Main Menu: Click the “Main Menu” button on the display screen to access the main menu.
  3. Navigate the Display: Use the ‘Total’ button located to the right of the display to scroll through different states and detailed reports. Continue clicking until a full report appears.
  4. View Detailed Information: Press the Enter key to view figures that describe the amount of electricity produced since the solar inverter was installed.

Common Issues with Solar Inverter Displays

Understanding these error codes is crucial for monitoring and troubleshooting your solar inverter. Here are some common error codes and their meanings:

  • Error Code 01: This might indicate a communication failure between the inverter and the monitoring system. Check the connections and communication settings.
  • Error Code 02: This could signal an overvoltage issue, where the input voltage from the PV panels exceeds the inverter’s capacity. Verify the PV panel configuration and ensure it matches the inverter’s specifications.
  • Error Code 03: This indicates an undervoltage problem, where the input voltage is too low for the inverter to operate efficiently. Check the PV panels and connections for any issues.
  • Error Code 04: This code might point to an overheating issue. Ensure proper ventilation for the inverter and avoid exposing it to direct sunlight for extended periods.
  • Error Code 05: This could signal a grid-related issue, where the grid voltage or frequency is outside the acceptable range. Contact your utility provider to check for any grid problems.


Reading a solar inverter display might seem daunting at first, but with a basic understanding of the terms and functionalities, it becomes much more manageable. The display provides essential information about the performance and status of your solar power system, helping you ensure everything runs smoothly and efficiently. Regularly checking and understanding your solar inverter display can help you spot issues early. This means you can maintain optimal performance, and maximise the benefits of your solar power system.

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