KYKY FD series Error LU: Under-voltage protection with controller

Molecular pump controller · taken from the manufacturer’s manual, pages cited

Fault codeLU

Under-voltage protection with controller indicates the controller has detected insufficient voltage levels. The manual lists no action for this code.

Model
KYKY FD series
Display shows
Under-voltage protection with controller (LU)
Type
Fault code
Source
Manual p. 41

What LU means

Under-voltage protection with controller p. 41

If LU is still not resolved

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

Open the manual at page 41 All FD series error codes Manual details & download

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