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Solar charge controller MAX series User Manual

6. Troubleshooting

6.1 Troubleshooting

Faults

Reason

E01

Load short circuit

Load over current

E02

E03

Battery low voltage

E04

Battery over voltage

Over temperature

E05

PV over voltage

E06

PV over current

E07

PV short circuit

E08

Two or more errors at the same time can damage the controller, so you must

troubleshoot the existing fault .

6.2 Maintenance

For best system performance, the following inspections and maintenance tasks are recommended

to be carried out for at least two times a year.

Make sure no block on air-flow around the controller. Clear up any dirt and fragments on radiator.

Check all the naked wires to make sure insulation is not damaged.

Repair or replace some wires if necessary.

Tighten all terminal screws to the indicated torque; Inspect for loose, broken or burnt cable connections.

Check and confirm that LCD is consistent with required. Pay attention to any troubleshooting or error

indication. Take corrective action if necessary.

Make sure all system components are effectively and tightly connected to ground.

Check all terminals for any corrosion signs, damaged insulation, increased temperature.

Check for any dirt, nesting insects and any corrosion signs. Implement corrections actions as early as

possible.

WARNING：Risk of electric shock!

①Clear short circuit fault

②Restart the controller or press the key to restore the load

output.

①Power reduction equipment

②Restart the controller or press the button to clear the faulty

load and restore output.

Load will be reconnected when battery is recharged.

Check if other sources overcharge the battery.

If not, controller is damaged.

After the temperature decreases,the controller will work

normally.

Reduce solar photovoltaic voltageor shield the solar panel

appropriately.

Check whether the solar panel power exceeds the maximum

power limitation. If yes, change the solar panel.

Check whether the solar panel is damaged. If so,

replace the photovoltaic panel

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

and then follow the corresponding inspections and operations.

Page 8 of 10 pages

Troubleshooting