KYKY FD series Error Codes

12 codes from pages 41–48 of the manual

This is the list of fault codes the KYKY manual gives for the FD series molecular pump controller. Find your code below and open it for what the manual says about its causes and what to do.

Fault codes from p. 41

CodeWhat it meansPage
ERR Mal-operation with keys p. 41
OC Over-current protection with controller p. 41
OL2 Over-current protection with pump p. 41
SL Over-load protection with pump p. 41
OE Over-voltage protection with controller p. 41
LU Under-voltage protection with controller p. 41
ESP Over-heat protection with pump p. 41
OH Over-heat protection with controller p. 41
0001 Illegal function code p. 48
0002 Illegal address p. 48
0003 Illegal data p. 48
0004 Slave fault p. 48

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