Veichi SI23 - Page 24

SI23 Solar Pump VFD Manual
23
A.Old
Pump Over
Current
Protection
●Current is higher than set
●Check the pump load
●Check F21.20/F21.21/F21.22
settings
A.LPr
Minimum Power
Protection
●Output power is very low
●Check the solar power
●Check F21.23/F21.24/F21.25
settings
A.FuL
Water Fulfilled
Protection
●Water tank is fulfilled
●Please check the water tank
●Check F21.27/F21.28
A.LU1
Bus voltage too low
Check the value of the input voltage