PD20Series
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Fault code Fault description
Possible causes
Remedy
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
5.2 Common Faults and Remedies
The PDS23
Plus
solar pump controller may have following faults or malfunctions
during operation, please refer to the following remedies.
5.2.1 Pump can not run
The main problem of the new system is that the wiring is not standardized and the
controller terminal line falls
，
so that the pump cannot run. Sometimes the RUN
indicator light on the keyboard is bright, and the controller also has voltage
output,but may be the solar array does not have enough power to start the pump;
then the controller will attempt to start the pump every 120s. There are the following
reasons for the pump can not run:
