Technical Support
Solar panel parameters
PUMP Voltage
PUMP  POWER
PEAK VOLTAGE
VMP(V)
OPEN CIRCUIT VOLTABEVOC(V)
24V/36V
≥1.3
≥18
18V-50V
48V
≥1.3
≥30
30V-96V
72V
≥1.3
≥50
50V-150V
96V
≥1.3
≥60
60V-180V
110v
≥1.3
≥60
60V-180V
Error Codes and Solutions
Fault Code
Fault
Description
Causes and Solutions of Fault
Recovery Procedure
P0
Hardware
Overcurrent
•Motor model is mismatch, please choose matching pumps.
Automatically remove after 30s
P43
Phase Protection
•UVW three-phase open circuit, please rewiring to ensure it reliable contact.
Automaticallyremove after 30s
P46
Stall Protection
Motor model is mismatch, please choose matching pumps.
Automaticallyremove after 30s
P49
Software
Overcurrent
•Water pump bearing stuck, clean pump bearings.
 Automaticallyremove after 30s
P50
Low Voltage
Protection
he input voltage is too low, please distribute power refer to the electrical   characteristics.
Voltage return tonormal,
 remove the fault immediately
P51
High Voltage
Protection
The input voltage is too high, please distribute power refer to the electrical   characteristics.
Voltage return tonormal, 
 remove the fault immediately
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.
Automatically clear after 30 minutes or   repower to clear
P60
High Temperature
Protection
The temperature of controller MCU is more than 90°C.
Automatically clear after the 
 temperature is normal
E8
Current Sampling Failure
Cut off the power and restart after 30 seconds.
Restart the power
PL
Power Shortage
1.No sunlight, waiting for the sunlight to restart.
2.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  removal
ALARM
Reverse connection protect  
Exchange the positive and negative wire.
Restart the power
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