ABB ACH550 Error 1004: PAR AO SCALE

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

Fault code1004

PAR AO SCALE means the analog output scaling parameters have inconsistent values. The manual's first action is: “Check for any of the following: 1504 AO 1 MIN > 1505 AO 1 MAX. 1510 AO 2 MIN > 1511 AO 2 MAX.”

Model
ABB ACH550
Display shows
PAR AO SCALE (1004)
Type
Fault code
Source
Manual p. 28

What 1004 means

PAR AO SCALE p. 28

Common causes

  • Parameter values are inconsistent. p. 28

What to do

  1. Check for any of the following: 1504 AO 1 MIN > 1505 AO 1 MAX. 1510 AO 2 MIN > 1511 AO 2 MAX. p. 28

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

If 1004 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 28 All ACH550 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 1004; 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.