Danfoss VLT Alarm 4: Mains phase loss

Danfoss Electrical Alarm/Warning Drive

Model: VLT 2800 / FC Series | Code: 4

Applicable Systems
FC-302 FC-301

Symptoms

One phase missing from power supply input.

Possible Causes

  • Mains phase loss

Troubleshooting Steps

  1. Step 1: Check power supply voltage and all three phases are present.
    Fault resolved after action

How to Reset

Reset by: 1) Correct the fault condition. 2) Press RESET button or cycle power. 3) Verify fault does not recur.

Related Danfoss 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: Danfoss VLT 2800 Manual (sinodrive.com)

Category: Electrical