Zeversolar – Error Code 3

Zeversolar Inverter Error Code 3

Is your Zeversolar Solar Inverter showing up with Error Code 3 on the screen?

An Error Code 3 on your Zeversolar solar inverter, known as a “Rly-Check Fault,” means that the output relay, which is a switch inside your inverter that helps control the electricity flow, isn’t working correctly. This issue can prevent your inverter from efficiently managing the power from your solar panels.

To fix this, you’ll need to safely turn off your inverter and disconnect it from both the electricity grid and your solar panels. Here’s how you can do it in easy steps:

1. Turn off the inverter using its main power switch.
2. Disconnect it from the electricity grid. You might need to turn off the circuit breaker or use the external disconnect switch.
3. Also, disconnect the inverter from your solar panels. There might be a switch or a connector for this near your inverter or on the panels themselves.
4. Wait until the inverter’s display screen and any lights have completely turned off.
5. After everything is off, reconnect the inverter to the electricity grid and your solar panels by reversing the disconnection steps.
6. Turn the inverter back on using its main power switch.

This process resets the system and can often clear the fault by allowing the relay to reset itself.

Troubleshooting to try

• Check if your inverter is switched on
• Check if your DC isolator is turned on
• Check if all the light indicators are green
• Try rebooting the whole system

How to restart/reset/reboot your solar inverter?

Follow the inverter shut down procedure label which may be located on your inverter or the main switchboard of your house.

Typically, this procedure will be:

1. Turn off the AC “Solar Supply Main Switch” or “Inverter Main Switch” located on the main switchboard of the house.
2. Turn off the AC isolator at the inverter (if present)
3. Turn off the “PV array DC isolator”, located next to the inverter. The screen should go blank, and the lights should go off.  Leave it like this for 5 minutes or so, and then switch it back on.
4. Wait a few minutes…
5. Turn the inverter back in reverse order (DC isolator first, AC second).
6. DC On first. It is very important that you restart by switching the DC isolator on first, as you shouldn’t switch DC under load (ie with the AC on), as the isolator could arc.
7. AC On next. Put the AC switch (solar supply main switch) back on, and then wait.  All inverters take at least one minute to restart, and you may see the lights flashing while the inverter does internal testing.  There will also be a variety of messages on the screen again as it tests.  This is quite normal.

Maintenance

Normally, the inverter needs no maintenance or calibration. Regularly inspect the inverter and the cables for visible damage. Disconnect the inverter from all power sources before cleaning. Clean the enclosure and display with a soft cloth. Ensure the heat sink at the rear of the inverter is not covered.