Alarm List
Alarm Number (4000 to 4999)
Alarm List-657
7 Error from welder 7. Arc welding power source 
error
Contact your Yaskawa representative.
8 Error from welder 8. Arc welding power source 
error
Contact your Yaskawa representative.
101 Sub code: Error No. from 
welder.
Arc welding power source 
error
Contact your Yaskawa representative.
4273 MOTOWELD IGBT 
SHORT CIRCUIT
1 Error from welder 1. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
2 Error from welder 2. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
3 Error from welder 3. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
4 Error from welder 4. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
5 Error from welder 5. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
6 Error from welder 6. Arc welding power source 
error
Replace the IGBT device (Part code AJ0EL3870). 
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy