Mitsubishi Electric · FR-A800 Variable Speed Drive (Separated Converter)
This fault indicates that the FR-A800's Operation Panel (PU) is disconnected from the inverter. This can prevent local control and monitoring of the drive.
Click steps to track your progress.
Verify that the operation panel (PU) is securely connected to the FR-A800 inverter's communication port.
Inspect the connection cable between the operation panel and the inverter for any signs of damage, cuts, or worn insulation.
If a spare operation panel is available, try connecting it to rule out a faulty panel.
Check the inverter's communication port for any physical damage or debris that might impede proper connection.
Perform an inverter reset after verifying the connection to clear the fault.