Yaskawa iQpump1000 AC Drive Quick Start - Manual (Page 259)

HOA Keypad Display Fault Name
WLL
Water Level Loss
Water Level Loss
Cause Possible Solution
An analog input programmed for setting 23
“WaterLvl/Suction” has dropped below 3
mA or risen above 21 mA for longer than 1
second.
Repair level sensor or wiring.
5.2 Fault Detection
YASKAWA TOEP YAIP1W 01B YASKAWA AC Drive - iQpump1000 Quick Start Guide 259
5
Troubleshooting