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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

CPU.E

Other detected faults

Schindler · Altivar 312 Drive

What does CPU.E mean?

This is a general fault code indicating the ATV12 remote display terminal has detected an unspecified internal fault within its Central Processing Unit (CPU) or other core components.

Common Causes

  • An internal hardware or software malfunction within the remote terminal's CPU.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Attempt to power cycle the ATV12 remote display terminal by disconnecting and reconnecting it.

  2. 2

    If the fault persists, replace the ATV12 remote display terminal.

Browse all codes in this manual (32)
Verified technical data. Last updated: April 2026

Related Faults

A-17Alarm buttonCFFINCORRECT CONFIG.CFIINVALID CONFIG
Source: Schindler Altivar 312 Drive
Open Manual (Page 110)Search more codes in this manual