ABB ACH550 Error 3207: UNKNOWN BYPASS

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

Fault code3207

UNKNOWN BYPASS indicates that the bypass configuration is invalid or unsupported. The manual's first action is: “Replace RBCU or load most current firmware Contact ABB at 1-800-HELP-365 option 4 Replace RBCU or load most current firmware”

Model
ABB ACH550
Display shows
UNKNOWN BYPASS (3207)
Type
Fault code
Source
Manual p. 71

What 3207 means

UNKNOWN BYPASS p. 71

Common causes

What to do

  1. Replace RBCU or load most current firmware Contact ABB at 1-800-HELP-365 option 4 Replace RBCU or load most current firmware p. 71

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

If 3207 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 71 All ACH550 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 3207; 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.