USB Communication Fault

What does E.USB mean?

This fault indicates an error in the USB communication with the FR-A800 inverter. This typically affects connectivity with tools like FR Configurator2 for parameter setup and monitoring.

• Disconnected or faulty USB cable between the FR-A800 and the PC.
• Incorrect or missing USB drivers on the connected PC.
• Faulty USB port on either the inverter or the PC.
• Interference or noise affecting the USB communication signal.
• Software issues with FR Configurator2 or the operating system.

Click steps to track your progress.

1. 1

   Verify that the USB cable is securely connected to both the FR-A800 inverter and the PC. Inspect the cable for damage.

2. 2

   Try using a different USB port on the PC and/or a different USB cable.

3. 3

   Ensure that the correct Mitsubishi Electric USB drivers are installed on the PC. Reinstall them if necessary.

4. 4

   Restart the PC and FR Configurator2 software.

5. 5

   Check the inverter's USB port for any physical damage or debris that might prevent a proper connection.