Grundfos CUE Error Codes

25 codes from page 38 of the manual

This is the list of alarm codes the Grundfos manual gives for the CUE CUE frequency converter. Find your code below and open it for what the manual says about its causes and what to do.

Alarm codes from p. 38

CodeWhat it meansPage
1 Too high leakage current p. 38
2 Mains phase failure p. 38
3 External fault p. 38
16 Other fault p. 38
30 Replace motor bearings p. 38
32 Overvoltage p. 38
40 Undervoltage p. 38
48 Overload p. 38
49 Overload p. 38
55 Overload p. 38
57 Dry running p. 38
64 Too high CUE temperature p. 38
70 Too high motor temperature p. 38
77 Communication fault, duty/standby p. 38
89 Sensor 1 outside range p. 38
91 Temperature sensor 1 outside range p. 38
93 Sensor 2 outside range p. 38
96 Setpoint signal outside range p. 38
148 Too high bearing temperature p. 38
149 Too high bearing temperature p. 38
155 Inrush fault p. 38
175 Temperature sensor 2 outside range p. 38
240 Relubricate motor bearings p. 38
241 Motor phase failure p. 38
242 AMA® did not succeed p. 38

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with Grundfos. Found a mistake? Report an error.