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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.

E5

SI-T3 Watchdog Timer Error

Yaskawa · iQpump1000

What does E5 mean?

The SI-T3 watchdog timer has timed out, indicating that data has not been received from the PLC. This often points to a communication issue with the PLC.

Common Causes

  • Data has not been received from the PLC

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Execute DISCONNECT or ALM_CLR command

  2. 2

    Issue a CONNECT command or SYNC_SET command

  3. 3

    Proceed to phase 3 (refer to the SI-T3 Option Technical Manual for more details on troubleshooting)

Browse all codes in this manual (45)
Verified technical data. Last updated: April 2026

Related Faults

ACCUMAccumulated Level FaultAJFAnti-Jam FaultAUXFBPI Aux Lvl Loss (Wire-break detection for PI Aux Feedback Level)
Source: Yaskawa iQpump1000
Open Manual (Page 274)Search more codes in this manual