Yaskawa EF4 (blinking) fault code meaning
Yaskawa / EF4 (blinking)
Series: L7
External fault (input terminal S4) (warning)
drive
Meaning: For the external fault function alarm output, an external fault was input through a multifunction input terminal (S3–S7).
Possible causes
Source: Yaskawa L7 Series Elevator Drive User Manual Fault Diagnosis P268