Mitsubishi Electric 2033 G Series Error UF404: Load abnormal

UPS · taken from the manufacturer’s manual, pages cited

Alarm codeUF404

Auto transfer of frequent occurrence based on overload causes a Load abnormal. The manual's first action is: “CHECK LOAD”

Model
Mitsubishi Electric 2033 G Series
Display shows
Load abnormal (UF404)
Type
Alarm code
Source
Manual p. 42

What UF404 means

Load abnormal p. 42

Common causes

  • Auto transfer of frequent occurrence based on overload p. 42

Safety warnings — read before you start

  • DANGERWARNING 1. Lethal voltages exist within the equipment during operation. Observe all warning and cautions in this manual. Failure to comply may result in serious injury or death. p. 7

What to do

  1. CHECK LOAD p. 42

If UF404 is still not resolved

  • Obtain a qualified service for this equipment as per instructions. p. 7
    “Obtain a qualified service for this equipment as per instructions.”

This page summarises what the manufacturer’s manual says about UF404; 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 Mitsubishi Electric. Found a mistake? Report an error.