Grundfos CUE Error 64: Too high CUE temperature

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

Alarm code64

The Grundfos CUE detected a too high temperature for the CUE unit itself. The manual's first action is: “Stop”

Model
Grundfos CUE
Display shows
Too high CUE temperature (64)
Type
Alarm code
Source
Manual p. 38

What 64 means

Too high CUE temperature p. 38

What to do

  1. Stop p. 38

If 64 is still not resolved

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

This page summarises what the manufacturer’s manual says about 64; 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.