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ErrorLib — Industrial Fault Code Library

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E.CTE

Operation panel power supply short circuit

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

What does E.CTE mean?

This fault indicates a short circuit in the power supply circuit for the operation panel (FR-DU08) or parameter unit (FR-PU07) connected to the PU connector of the FR-A800/A800 Plus Series drive. This prevents proper operation panel functionality.

Common Causes

  • Short circuit in the cable connecting the operation panel/parameter unit to the drive's PU connector.
  • Internal fault or short circuit within the operation panel (FR-DU08) or parameter unit (FR-PU07) itself.
  • Damage to the drive's PU connector or its internal power supply for the operation panel.
  • Foreign material or debris lodged in the PU connector causing a short circuit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Disconnect the operation panel (FR-DU08) or parameter unit (FR-PU07) from the PU connector and power cycle the drive. If the fault clears, the panel or its cable is likely the cause.

  2. 2

    Inspect the cable connecting the operation panel for any damage, pinches, or signs of a short circuit.

  3. 3

    Examine the PU connector on the FR-A800/A800 Plus Series drive for bent pins, debris, or foreign material.

  4. 4

    If the fault persists with the panel disconnected, it may indicate an internal issue with the drive's power supply to the PU connector.

  5. 5

    Test with a different, known-good operation panel or parameter unit if available, to confirm if the panel itself is faulty.

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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