Zeversolar – Error Code 41

Zeversolar Inverter Error Code 41

Is your Zeversolar Solar Inverter showing up with Error Code 41 on the screen?

Error Code 41 on your Zeversolar Solar Inverter indicates a discrepancy in the grid voltage values detected by the system’s main control unit (master MCU) and its secondary control unit (slave MCU). Essentially, the two parts of your inverter are getting different readings of the electricity coming from your power grid, which could lead to potential issues with the inverter’s operation.

To fix this issue, follow these simple steps:

1. Turn off your inverter. This might involve switching off the circuit breaker or the AC/DC disconnect switches linked to your inverter.
2. Disconnect your inverter from the main power grid and also detach any solar panel arrays connected to it. This is to ensure no electricity is flowing into or out of the inverter.
3. Wait for about 3 minutes. This short break allows the system to reset and clear any temporary errors.
4. After 3 minutes, reconnect your solar panel arrays and then connect the inverter back to the main power grid.
5. Turn your inverter back on. Check to see if the error code has cleared and if the inverter is functioning normally again.

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.