Delta dAUE fault code meaning
Delta / dAUE
Series: MP300
Dry-pump curve auto measurement error
AC motor drive
Meaning: High-speed power cannot be lower than low-speed power, and the tuned power cannot exceed the AC motor drive power. If an error occurs during auto measurement, a STOP command is issued to stop. High-speed power = parameter 12-67; low-speed power = parameter 12-66
Possible causes
- Error in the values obtained by auto measurement of the dry-run curve
Source: MPD_MP300 Series User Manual (DELTA_IA-MDS_MPD_UM_SC_20260326) P146
Series: VP3000-E, VP3000
Pump dry-running auto-tuning error
AC motor drive
Meaning: 1. The high-speed power auto-tuning value is below the low-speed power auto-tuning value. 2. Either the high-speed or low-speed power auto-tuning value exceeds the rated power of the AC motor drive. If either condition is met, a STOP command is issued to stop, and dAUE is displayed.
Possible causes
- Error in the values obtained by auto measurement of the dry-run curve
- Water is present in the pump system
Source: VP3000-E & VP3000-EHS User Manual (DELTA_IA-MDS_VP3000-E-VP3000-EHS_UM_SC_20260306) P403; VP3000 Series User Manual (DELTA_IA-MDS_VP3000_UM_TC_20250523) P438