Danfoss VLT Alarm 37: Internal error 0

Danfoss Electrical Alarm Drive

Model: VLT 2800 / FC Series | Code: 37

Applicable Systems
FC-302 FC-301

Symptoms

Communication error between control card and BMC.

Possible Causes

  • Internal error 0

Troubleshooting Steps

  1. Step 1: Restart drive; if persistent, replace control card.
    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.

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Source: Danfoss VLT 2800 Manual (sinodrive.com)

Category: Electrical

Published: 2026-10-30