Danfoss VLT Alarm 91: AI54 setting error

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 91

Applicable Systems
FC-302 FC-301

Symptoms

Terminal 54 connected to KTY sensor but not set to voltage mode.

Possible Causes

  • AI54 setting error

Troubleshooting Steps

  1. Step 1: Set terminal 54 to voltage mode when using KTY sensor.
    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

Source: Danfoss FC Series Alarm Codes (agilectrl.com)

Category: Electrical