6
FAULT CODES
Faults
Possible reasons
Troubleshooting
Charging LED
Solar array
Check that solar and battery wire connections are
indicator off during
disconnection
correct and tight.
daytime when
sunshine falls on
solar modules
Green Battery LED
Battery voltage higher Check the battery voltage. If voltage levels are high,
indicator fast
than over voltage
disconnect the solar module immediately and
flashing
disconnect voltage
change to a new controller.
(OVD)
Battery LED
Battery under voltage Load output is normal. Charging LED indicator will
indicators orange
return to green automatically when fully charged.
Battery LED indicators Battery over
The controller cut off the output automatically.
RED color and loads discharged
LED indicator will return to green automatically
not working
when not working.
Load status
Over load
Remove or cut out the additional load and press
indicator red and
the button, the controller will resume after
slow flashing
3 seconds.
Load status indicator Short circuit
Clear short circuit and press the button, the controller
red and fast flashing
will resume to work after 3 seconds.
All LED indicators
Temperature of
When heat sink of the controller exceeds 85°C, the
flashing (battery
controller too high
controller will automatically cut input and output
orange indicator
circuit. When the temperature reaches below 75°C,
flashing)
the controller will resume operation. Reduce the
environment temperature, the power of solar
module or the power of the load.
All LED indicators
System voltage error
Check whether the battery voltage matches the
flashing (battery red
controller working voltage. Please change to a suitable
indicator flashing)
battery or reset the working voltage. If there is
nothing abnormal, please press load button to
clear the malfunction.
SOC value incorrect
Wrong battery type
Correct the right battery type;
selected using the
Using the configuration of the charging voltage
reconfigured profile
compensation if choosing the user defined battery
of the user defined
type and ignore the SOC.
battery type.
SPECIFICATIONS
Electrical Parameters
Nominal System Voltage
12/24VDC
Max. PV input voltage
50V
Max. Battery Terminal Voltage
34V
Rated Battery Current
SC320: 20A, SC330: 30A
Charge Circuit Voltage Drop
≤
0.28V
Discharge Circuit Voltage Drop
≤
0.20V
Self-consumption
≤
8.4mA/12V;
≤
7. 8mA/24V
Temperature compensation coefficient
-3mV/°C /2V (Default)
Grounding
Positive grounding
