Gefran ARTDriveL Error 21: BU overvoltage

Gefran ARTDriveL drive · taken from the manufacturer’s manual, pages cited

Fault code21

A BU overvoltage error indicates a failure in one or more power supply circuits within the control section. The manual's first action is: “Disable drive”

Model
Gefran ARTDriveL
Display shows
BU overvoltage (21)
Type
Fault code
Source
Manual p. 190

What 21 means

BU overvoltage p. 208

Common causes

  • One or more of the power supply circuits in the control section failed p. 208

What to do

  1. Disable drive p. 208

If 21 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Gefran service.

Open the manual at page 190 All ARTDriveL error codes Manual details & download

This page summarises what the manufacturer’s manual says about 21; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Gefran. Found a mistake? Report an error.