The LCD is off during
daytime when sunshine
falls on PV modules
properly
Confirm that PV and
battery wire connections
are correct and tight
Wire connection is correct,
LCD does not display
Battery voltage is lower
than 9V
Please check the voltage of
battery. At least 9V voltage
to activate the controller
Battery voltage higher than
over voltage disconnect
voltage (OVD)
Check if the battery voltage
is too high, and disconnect
the solar module
Load output is normal,
charging LED indicator will
return to green
automatically when fully
charged
Battery low voltage
disconnect
The controller will cut off
the output automatically,
LED indicator will return to
green automatically when
fully charged
Overload or Short circuit
Remove or reduce the load
and press the button, the
controller will resume to
work after 3 seconds
Maintenance
The following inspections and maintenance tasks are recommended at least two times
per year for best performance.
• Make sure controller firmly installed in a clean and dry ambient.
2) The following rules must be observed when modifying the parameters value in user
battery type
(factory default value is the same as sealed type):
a. Over Voltage Disconnect Voltage > Charging Limit Voltage a Equalize Charging Voltage
a Boost Charging Voltage a Float Charging Voltage > Boost Reconnect Charging Voltage.
b. Over Voltage Disconnect Voltage > Over Voltage Reconnect Voltage
c. Low Voltage Reconnect Voltage > Low Voltage Disconnect Voltage a Discharging Limit
Voltage.
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