PDS23 Series
- 40 -
Fault
code
Fault description
Possible causes
Remedy
Long-time communication
interruption
Check communication
devices and cables
E018
Current detection
fault
Loose wires or connectors of
control board
Check the wiring and
connectors
Amplifying circuit abnormal
Ask for support
Hall sensor is damaged
Power circuit abnormal
E020 Well Level Fault
Dry well or slow water recovery
Wait for water to recover or
reinstall the pump
E021
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
E022 EEPROM fault
Read/ Write fault of control
parameters
Push STOP/RESET to reset
EEPROM damaged
Ask for support
E026 Water shortage fault
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
