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6 - TROUBLESHOOTING
6.1 - Error code and correction
Error Code
Symptoms
E01
LVD
E02
Excessive load current and load switched off
E03
Short circuit at load output and load switched off
E04
HVD
Battery charging switched off due to over-
E05
temperature of controller
E06
Over-voltage of solar panel
Charging switched off by controller due to
E07
excessive solar panel current
6.2 - Symptoms and correction
Symptoms
No sign on LCD initialization
No charging current
Load not work
Load not switched on at preset point
Load unable to be switched on at night in Light control mode
Checks
Manually recharge the battery.
Reduce load current at load output, and switch on load manually or
wait for 10 mins for auto switch-on by controller.
Rectify short circuit and switch on load manually or wait for 5 mins
for auto switch-on by controller.
Make sure connection between battery and controller is good;
make sure battery capacity is not too low. When battery voltage is
0.5V lower than defined overvoltage protection point, load switched
on automatically by controller.
Allow the controller to cool down and restart charging automatically.
Make sure voltage of open circuit is not too high.
Check power of solar panel and reduce solar panel quantity in
parallel connection and wait for 2 mins for restart charging.
Checks
Make sure no reverse connected battery and connection between
battery and controller is good; make sure circuit of battery
switched on and fuse protector connected.
Make sure no reverse connected solar panel and connection
between solar panel and controller is good with no open circuit.
Make sure ther's no reverse connected load and controller is
not in protection against overload, short circuit, under-voltage or
overvoltage.
Make sure load controlling mode is correctly set; make sure
battery voltage not too low.
Make sure load controlling mode is correctly set and check solar
panel not illuminated by other light sources at night.
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