GE Fuji AF-300 Mini™ Error LU: Undervoltage protection

GE Fuji AF-300 Mini Drive · taken from the manufacturer’s manual, pages cited

Alarm codeLU

Undervoltage protection triggered when intermediate DC circuit voltage drops below 200 Vdc (for 230 V series) or 400 Vdc (for 460 V series). The manual's first action is: “However, if data "4" or "5" are selected for F14, there is no alarm output even if the intermediate dc circuit voltage drops.”

Model
GE Fuji AF-300 Mini™
Display shows
Undervoltage protection (LU)
Type
Alarm code
Source
Manual p. 79

What LU means

Undervoltage protection p. 116

Common causes

  • Stops the motor when the intermediate dc circuit voltage drops below the undervoltage level (200 Vdc for 230 V series, 400 Vdc for 460 V series). p. 116

What to do

  1. However, if data "4" or "5" are selected for F14, there is no alarm output even if the intermediate dc circuit voltage drops. p. 116

Before you service the product, read the safety instructions in the manual p. 4.

If LU is still not resolved

  • Contact a qualified electrician for wiring p. 5
    “Wiring must only be performed only by a qualified electrician.”
  • Check that power is off before wiring p. 24
    “Check that the power is turned off before proceeding with any wiring Failure to do so may result in electric shock.”
Open the manual at page 79 All AF-300 Mini™ error codes Manual details & download

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