Power unit unknown

What does 0x63A3 mean?

This fault occurs when the installed power unit is not supported by the inverter's current software version. This immediately disables the inverter, leading to motor coasting, and the error can only be reset by mains switching.

• Installation of a power unit (PU) model that is newer or from a different series than what the inverter's current firmware supports.
• An older firmware version installed on the control unit (CU) that does not recognize a newly installed or upgraded power unit.
• Incorrect power unit type or rating installed, leading to an incompatibility with the overall inverter system.
• Corrupted firmware on the control unit, preventing it from properly identifying or communicating with the power unit.
• Loose or faulty internal connection between the control unit and the power unit.

Click steps to track your progress.

1. 1

   Verify the part number and model of the installed power unit (PU) against the inverter's documentation to ensure compatibility.

2. 2

   Check the inverter's current control unit (CU) firmware version and compare it with the minimum firmware version required to support the installed power unit.

3. 3

   Update the inverter's control unit (CU) firmware to the latest compatible version that supports the installed power unit.

4. 4

   If the power unit is confirmed to be incompatible, replace it with a supported model or, if applicable, replace the control unit with one that supports the existing power unit.

5. 5

   Perform a mains power cycle after any firmware update or hardware change to allow the inverter to re-initialize and detect the power unit.