Danfoss VLT Alarm 21: Parameter out of range

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 21

Applicable Systems
FC-302 FC-301

Symptoms

Parameter setting exceeds allowed range.

Possible Causes

  • Parameter out of range

Troubleshooting Steps

  1. Step 1: Check and correct parameter settings per manual.
    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