u
Fault Information and Troubleshooting Method
NO
Fault
Code
Fault
Description
Cause and Solutions of Fault
Recovery
Procedure
1
P0
Hardware
Overcurrent
★
Motor model is mismatch, please choose
matching pumps.
★
UVW three-phase short-circuit
connection, please rewiring to ensure the
normal installation of UVW.
Automatically
remove after 30s
2
P43
Phase
Protection
UVW three-phase open circult, please
rewiring to ensure it reliable contact.
Automatically
remove after 30s
3
P46
Stall
Protection
★
Motor model is mismatch, please choose
matching pumps.
★
Pump extension cord is too long. Please
reduce the extension cord.
★
Power is too low, increase the power
supply.
★
Pump bearing is stuck, please clean
pump bearings.
Automatically
remove after 30s
4
P49
Software
Overcurrent
★
Water pump bearing stuck, clean pump
bearings.
★
UVW three-phase short-circuit
connection, please rewiring to ensure the
normal installation of UVW.
Automatically
remove after 30s
5
P50
Low Voltage
Protection
The input voltage is too low, please
distribute power refer to the electrical
characteristics.
Voltage return to
normal, remove the
fault immediately
6
P51
High Voltage
Protection
The input voltage is too low, please
distribute power refer to the electrical
characteristics.
Voltage return to
normal, remove the
fault immediately
7
P48
Dry-run
Protection
★
Not all of air in the pump is exhausted,
cut off the power, re-power and start the
pump drainage after 30 seconds.
★
There is no water in the water tank
waiting for water, it will restart.
Automatically clear
after 30 minutes or
re-power to clear
8
P60
High Temperature
Protection
The temperature of controller MCU is more
than 90
℃
.
Automatically clear
after the temperature
is normal
9
E8
Current Sampling
Failure
Cut off the power and restart after 30
seconds.
Restart the power
10
PL
Power Shortage
★
No sunlight, waiting for the sunllight to
restart.
★
Solar panel matching error, refer to the
recommendation to match correctly.
At the first 5 times, it
will removal after 30
seconds, and then
30 minutes to
rempval
11
ALARM Reverse connection
protect
Exchange the positive and negative wire.
Restart the power
12
P42
Start fault
1-7 fault, appear continuously for several
times in 10 minute. Check NO.1-7 fault.
Restart power
10
