Charging LED is OFF during
daytime when sunshine falls on
PV array properly
Confirm whether the connection
of the PV array is correct and
tight
The wire connection is correct;
the controller is not working.
The battery
voltage is lower
than 8V.
Please check the voltage of the
battery(at least 8V voltage to
activate the controller).
Battery
frame blink,
fault icon
blink
Check whether the battery
voltage is higher than OVD (over
voltage disconnect voltage) and
disconnect the PV array
connection.
① When the battery voltage is
restored to or above LVR(low
voltage reconnect voltage), the
load recovers.
② Other ways to recharge the
battery.
While the battery temperature
decline to 55 ºC or below, the
controller resumes work.
4.3 Maintenance
The following inspections and maintenance tasks are recommended at least two times per
year for the best performance.
Make sure no block on airflow around the controller. Clear up any dirt and fragments on
the radiator.
Check all the naked wires to ensure insulation is not damaged for sun exposure,
frictional wear, dryness, insects or rats, etc. Repair or replace some wires if necessary.
Check and confirm that LED is consistent with required. Pay attention to any
troubleshooting or error indication. Take necessary corrective action.
Confirm that all terminals have no corrosion, insulation damaged, high temperature, or
burnt/discolored sign, and tighten terminal screws to the suggested torque.