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ErrorLib — Industrial Fault Code Library

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E.PUE

PU Disconnection

Mitsubishi Electric · FR-A800 Variable Speed Drive (Separated Converter)

What does E.PUE mean?

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.

Common Causes

  • The operation panel (FR-DU08 or similar PU) is physically disconnected from the inverter.
  • Loose or damaged connection cable between the operation panel and the inverter.
  • Faulty operation panel or inverter communication port.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the operation panel (PU) is securely connected to the FR-A800 inverter's communication port.

  2. 2

    Inspect the connection cable between the operation panel and the inverter for any signs of damage, cuts, or worn insulation.

  3. 3

    If a spare operation panel is available, try connecting it to rule out a faulty panel.

  4. 4

    Check the inverter's communication port for any physical damage or debris that might impede proper connection.

  5. 5

    Perform an inverter reset after verifying the connection to clear the fault.

Browse all codes in this manual (46)
Verified technical data. Last updated: April 2026

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Source: Mitsubishi Electric FR-A800 Variable Speed Drive (Separated Converter)
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