Grundfos CU 301 Error 1: +24 V overloa d

Grundfos CU 301 · taken from the manufacturer’s manual, pages cited

Alarm code1

+24 V overloa d means the internal 24 VDC supply is permanently overloaded, indicated by a red light. The manual lists no action for this code.

Model
Grundfos CU 301
Display shows
+24 V overloa d (1)
Type
Alarm code
Source
Manual p. 10

What 1 means

+24 V overloa d p. 10

Common causes

  • Permanent red light when the internal 24 VDC supply is overloaded. p. 10

If 1 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 10 All CU 301 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 1; 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.