Long-time communication
interruption
Check communication
devices and cables
Loose wires or connectors of
control board
Check the wiring and
connectors
Amplifying circuit abnormal
Dry well or slow water recovery
Wait for water to recover or
reinstall the pump
Tank Level Fault
before auto start
High level limit is reached.
Wait until water level comes
below the low level limit,
and then the PDS23 Solar
controller will start the pump
again
Read/ Write fault of control
parameters
Water shortage of water source
Stop the controller Repair
broken wiring or replace
water level switch
Verify if the setting of FD.12
"Water shortage detection current
ratio" is too high, while FD.10
"Water shortage detection time"
is non-zero and the current
sensing is enabled.
Reduce setting value of
FD.12
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