Delta OL fault code meaning
Delta / OL
Series: AFE3000
Overload
active front end
Meaning: The output current exceeds the current the active front end can withstand.
Possible causes
- Load too large
- Active front end capacity too small
- 7-41
Source: AFE3000 Series User Manual (DELTA_IA-PQ_AFE3000_UM_TC_20260330) P131
Series: VFD-L
Overload (indicator flashes three times, then pauses for two seconds)
AC motor drive
Meaning: The output current exceeds the current capacity of the AC motor drive; 150% of the rated current can be sustained for 60 seconds.
Possible causes
Source: Delta VFD-L Series AC Motor Drive User Manual, Error Message Indications and Troubleshooting P13