11. Common Troubles and Handling Methods
Troubles
Handling methods
Indicators, and LCD screen do not light up
Solar panel has voltage, battery terminal has no
voltage output, but the code E1 is displayed
With 12V/24V/36V/48V normal voltage battery
connected, the battery icon on the LCD screen
flashes slowly and the code E1 is displayed
Controller does not charge
Battery icon on the LCD screen flashes slowly
and the code E1 is displayed
Charge and discharge current is only 30A. Why?
Fault codes present
Other problems or anomalies that are difficult
to resolve
Check if the battery and solar panel are properly connected,
and if the LCD screen cable is poorly connected
No battery is detected on the lead-acid battery terminal,
there is no voltage output at both ends of the battery, it is
back to normal after the battery is connected
Check if the system voltage is set to the battery, or if it is
set to automatically identify and restart the controller; after
setting system voltage, for safety purposes, the system
should be restarted to take effect.
Check if wiring is correct, check if the solar panel voltage
exceeds the rated value and if the battery is over-voltage,
and check LCD error codes for internal over-temperature,
external over-temperature, external lithium battery low
temperature, lead-acid battery open circuit, presence of E10, etc.
Check if the battery is over discharged and if the system
voltage is set incorrectly
Because the system adopts the heat sink + air cooling
technology, when the system detects a fan error, it
automatically limits the maximum charge and discharge
current to 30A
Please refer to the “Error Codes” table for other errors
with error codes
Try F01 reset
Restore the factory settings F02 and set the parameters
according to the system configuration again. Be cautious!
12. Product Installation
12.1 Installation considerations
Be very careful when installing the battery, and wear protective goggles when installing FLD lead-acid
battery. Once in contact with the battery acid, rinse the contact part with water in time.
Avoid placing metal objects in the vicinity of the battery to prevent a short circuit.
Acidic gases may be generated when the battery is charged, so make sure the environment is well ventilated.
Flammable gases may be generated by the battery, so keep away from sparks.
When installing outdoors, avoid direct sunlight and rainwater infiltration.
False connection points and corroded wires may generate great heat that may melt the wire insulation, burn
the surrounding material, or even cause fire, so make sure that the connectors are tightened, and that the
wires are secured with ties to avoid loose connection due to shaking of the wires when the system is moved.
The voltage at the output terminals may exceed the human safety voltage when connecting the system, so
use insulated tools and keep your hands dry.
The battery terminals on the controller can be connected either to a single battery or to a battery pack. The
subsequent instructions in this manual are for use with a single battery, but they also apply to a system with
a battery pack.
Please observe the battery manufacturer’s safety recommendations.
2
The system connection wires should be selected according to the current density of not less than 5A/mm .
Ground the controller via its ground terminal.
Do not connect the battery reversely during installation, as this may cause irreversible damage!
12.2 Installation steps
Wiring and installation methods must comply with national and local electrical code requirements.
Step 1:
Choose installation site: avoid installing the controller in place where it is exposed to direct sunlight, high
temperature and water ingress, and make sure the area around the controller is well ventilated.
Step 2:
Fix the screws for hanging: mark the mounting location according to the size of the controller, drill two
mounting holes in the two marks, and fix the screws in the two mounting holes.
Step 3:
Fasten the controller: align the fixing holes of the controller with the 2 screws and then hang it up.
Step 4:
Open the controller front cover, connect wires, and close the front cover.
13.Protections
Device internal over temperature protection
When the internal temperature of the controller exceeds the set value, the charge power will be
automatically reduced or even charging is turned off to further slow down the internal temperature rise of
the controller.
Battery over temperature protection
Battery over-temperature protection requires an external battery temperature sampling sensor. When it
detects an over temperature of the battery, charging will be stopped. When the battery temperature drops
to 5 degrees lower than the set value, and lasts for 2 seconds, charging automatically resumes.
Input over power protection
When the solar panel power is greater than the rated value, the controller will limit the charging power
within the rated power range to prevent excessive current from damaging the controller, and the
controller will enter current limiting charge mode.
15
16
E16
E17
E18
E19
E24
Battery discharge high temperature
protection
Battery discharge low temperature
protection
Overcharge protection
Battery charge low temperature
protection
Fan failure
Turn off load output
Turn off load output
Turn off charging
Turn off charging
Fan is not detected and the maximum charge and
discharge current of the system is 30A
E30
System has disabled charging and
discharging via communication settings
This function can be set through the RS485 communication
port to the relevant registers, and is enabled by default
