How to Replace HMI Board

Below are the detailed steps for replacing the HMI on your inverter:

1. Power Down:

   • Turn off the AC and DC power to the inverter.

2. Open the Inverter:

   • Unscrew all T25 screws on the cover.
   • Slowly open the cover to access the interior components.

3. Document the Setup:

   • We recommend taking a photo of the current setup, especially how the communication wires and ribbon cables are connected to the existing HMI. This will serve as a reference for reassembly.

4. Remove the Old HMI:

   • Unplug all communication wires and ribbon cables from the HMI.
   • Unscrew the four screws securing the old HMI and remove it.

5. Install the New HMI:

   • Position the new HMI in place and tighten the four screws.
   • Reconnect all communication wires and ribbon cables, using your photo as a guide.