Grundfos CUE Error 3: External fault

CUE frequency converter · taken from the manufacturer’s manual, pages cited

Alarm code3

The Grundfos CUE detected an external fault. The manual's first action is: “Stop”

Model
Grundfos CUE
Display shows
External fault (3)
Type
Alarm code
Source
Manual p. 38

What 3 means

External fault p. 38

What to do

  1. Stop p. 38

If 3 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Grundfos service.

Open the manual at page 38 All CUE error codes Manual details & download

This page summarises what the manufacturer’s manual says about 3; 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 Grundfos. Found a mistake? Report an error.