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automatic load reconnect attempts, the fault must be cleared by restarting controller.
Damaged Remote Temperature Sensor
If the temperature sensor is short-circuited or damaged, the controller will be
charging or discharging at the default temperature 25℃ to prevent the battery
damaged from overcharging or over discharged.
Controller Overheating
If the temperature of the controller heat sinks exceeds 85℃, the controller will
automatically start the overheating protection and recover below 75℃.
High Voltage Transients
PV is protected against small high voltage surge. In lightning prone areas, additional
external suppression is recommended.
4.2 Troubleshooting
Charging LED
indicator 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, LED
indicator off
1. Battery voltage is
lower than 9V
2. PV voltage is less
than battery voltage
1. Please check the voltage of
battery. At least 9V voltage to
activate the controller
2.Check the PV input voltage
which should be higher than
battery‘s
Battery LED
indicator green
fast blink
Battery voltage
higher than over
voltage disconnect
voltage(OVD)
Check if the battery voltage is
too high, and disconnect the
solar module
Battery LED
indicator orange
Load output is normal, charging
LED indicator will return to green
automatically when fully charged
Battery LED
indicator red color
Battery low voltage
disconnect
The controller will cut off the
output automatically, LED
indicator will return to green
automatically when fully charged
All the LED
indicators blink.
(battery indicator
Too high
temperature of
controller
When heat sink of the controller
exceeds 85℃, the controller will
automatically cut input and
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