Yaskawa Z1000U - Manual (Page 206)

HOA Keypad Display Minor Fault Name
EF0
Option Card External Fault
An external fault condition is present.
Cause Possible Solutions
An external fault was received from the PLC with
F6-03 set to 3, which allows the drive to continue
running after an external fault occurs
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
There is a problem with the PLC program Check the PLC program and correct problems.
5.5 Alarm Detection
206 YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual