ABB ACS550-01 / ACS550-U1 Error 37: CB OVERTEMP

ACS550-01/U1 drive · taken from the manufacturer’s manual, pages cited

Fault code37

Drive control board is overheated. The fault trip limit is 88 °C. The manual's first action is: “Check for and correct: • Excessive ambient temperature. • Fan failure. • Obstructions in the air flow. Not for drives with an OMIO control board.”

Model
ABB ACS550-01 / ACS550-U1
Display shows
CB OVERTEMP (37)
Type
Fault code
Source
Manual p. 246

What 37 means

CB OVERTEMP p. 264

Common causes

  • Drive control board is overheated. The fault trip limit is 88 °C. p. 264

What to do

  1. Check for and correct: • Excessive ambient temperature. • Fan failure. • Obstructions in the air flow. Not for drives with an OMIO control board. p. 264

Before you service the product, read the safety instructions in the manual p. 6.

If 37 is still not resolved

  • contact your local ABB representative for replacement p. 6
    “Never attempt to repair a malfunctioning drive; contact your local ABB representative for replacement.”
  • For more technical information, contact your local ABB representative. p. 7
    “For more technical information, contact your local ABB representative.”
Open the manual at page 246 All ACS550-01 / ACS550-U1 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 37; 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.