ABB ACH550 Error 31: EFB 1

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

Fault code31

EFB 1 is a reserved fault code for EFB protocol applications and not currently used. The manual's first action is: “These codes are not used as of the publication of this manual.”

Model
ABB ACH550
Display shows
EFB 1 (31)
Type
Fault code
Source
Manual p. 26

What 31 means

EFB 1 p. 26

Common causes

  • Fault code reserved for the embedded fieldbus (EFB) protocol application. p. 26

What to do

  1. These codes are not used as of the publication of this manual. p. 26

Before you service the product, read the safety instructions in the manual p. 2.

If 31 is still not resolved

  • contact the factory or your local Authorized Service Center for repair or replacement. p. 2
    “Never attempt to repair a malfunctioning ACH550; contact the factory or your local Authorized Service Center for repair or replacement.”
Open the manual at page 26 All ACH550 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 31; 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 ABB. Found a mistake? Report an error.