Instruction manual

NOTE: If all the led are off, please check the voltage of battery. At least 9V

voltage to activate the controller.

NOTE: If the charging led is steady off without miswire, check the PV input

voltage which should be higher than battery’s.

5.3 Maintenance

The following inspections and maintenance tasks are recommended at least two times

per year for best performance.

 Check that the controller is securely mounted in a clean and dry environment.

 Check that the air flow and ventilation around the controller is not blocked. Clear all

dirt or fragments on the heat sink.

 Check all the naked wires to make sure insulation is not damaged for serious

solarization, frictional wear, dryness, insects or rats etc. Maintain or replace the wires

if necessary.

 Tighten all the terminals. Inspect for loose, broken, or burnt wire connections.

 Confirm that all the system components are ground connected tightly and correctly.

 Confirm that all the terminals have no corrosion, insulation damaged, high

temperature or burnt/discolored sign, tighten terminal screws to the suggested torque.

 Inspect for dirt, insects and corrosion, and clear up.

 Check and confirm that lightning arrester is in good condition. Replace a new one in

time to avoid damaging of the controller and even other equipments.

CAUTION：Risk of electric shock!

Make sure all the power is turned off before above operations, and

then follow the corresponding inspections and operations.