Danfoss Error 1027 [top] Jun 2026

Use a multimeter to check the incoming AC voltage.

: It can be a "General Hardware Error" where the internal control board cannot communicate with the power card or external options. danfoss error 1027

Rarely. Danfoss has released patches for specific fieldbus stacks (especially early Profinet versions). Check the release notes for your drive’s current firmware version. Use a multimeter to check the incoming AC voltage

Locate the option card (left side of the control card on VLT units). Interpret LEDs: danfoss error 1027

When error 1027 occurs, you might notice one or more of the following symptoms:

Error 1027 is almost always a hardware replacement situation. Do not attempt to run the drive without braking if your application requires rapid deceleration or has overhauling loads.