Zeversolar – Error Code 40

Zeversolar Inverter Error Code 40

Is your Zeversolar Solar Inverter showing up with Error Code 40 on the screen?

Error Code 40 on your Zeversolar Solar Inverter indicates that the device is overheating because its internal temperature has gone beyond the safe limit. This can happen if the airflow that cools the inverter is blocked or if the inverter is in a place that’s too warm.

To fix this, follow these steps in easy-to-understand language:

1. Check Airflow: Look around the inverter to see if anything is blocking the air from moving freely. This could be leaves, dirt, or other objects. Make sure there’s enough space around the inverter for air to circulate.
2. Check Temperature: Feel the area around the inverter. If it’s very hot, the inverter might be too warm. Try to cool down the space, maybe by providing shade or improving ventilation.

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.