Emotron VSU Error 28: SUE

Emotron VSU drive · taken from the manufacturer’s manual, pages cited

Fault code28

The grid voltage fluctuation is out of acceptable range. The manual's first action is: “Check input power grid voltage”

Model
Emotron VSU
Display shows
SUE (28)
Type
Fault code
Source
Manual p. 254

What 28 means

SUE p. 254

Common causes

  • Fluctuation of grid voltage is out of range p. 254

What to do

  1. Check input power grid voltage p. 254

If 28 is still not resolved

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

Open the manual at page 254 All VSU error codes Manual details & download

This page summarises what the manufacturer’s manual says about 28; 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 Emotron. Found a mistake? Report an error.