Yaskawa EF0: External fault (communication)

Yaskawa Electrical Fault vfd

Model: GA700/A1000 | Code: EF0

Applicable Systems
GA700 GA500 A1000 V1000 J1000

Symptoms

External fault (communication)

Possible Causes

  • External fault (communication)

Troubleshooting Steps

  1. Step 1: Check communication option card and external device alarm status.
    Fault resolved after action

How to Reset

Reset by: 1) Correct the fault condition. 2) Press RESET button on operator panel. 3) Verify fault does not recur.

Related Yaskawa Fault Codes

Comments (0)

Share your experience to help others facing the same problem.

No comments yet. Be the first to share your experience!

Leave a Comment

Source: Yaskawa A1000 Fault Code Manual (jinxinservice.com)

Category: Electrical

Published: 2026-10-24