Specifications

19
5.2 Troubleshooting
Troubleshooting according to the following instructions:
Faults
Possible reasons
Troubleshooting
Charging LED indicator
is off during daytime
and sunshine falls on
PV modules properly.
PV array disconnection
Check that PV and battery wire
connections are correct and tight.
Green charging LED
indicator is fast flashing
Battery voltage higher
than over voltage
disconnection
voltage(OVD)
Check if battery voltage Over high.
Disconnect the solar module
Battery and load
LED indicators are
Yellow color
Battery under voltage
Load output is not affected, charging
LED indicator will return to green
automatically when fully charged.
Battery and load LED
indicators stay on RED
color, and loads are not
working.
Battery
over discharged
The controller will cut off the output
automatically, LED indicator will
return to green automatically when
fully charged.
Battery and load LED
indicators are RED
slowly flashing.
Load power exceeds
rated power
Remove some loads, then
press the power switch,
the controller will return to work after
3 seconds,.
Battery and load LED
indicators are RED fast
flashing
Load power exceeds 4
times of rated power or
load short circuit.
Check load connections and cut off the
trouble loads, press the switch button
once, output will be recovered after 3
second. There is one time reconnect
attempt after 10 seconds when first
time short circuit. If short circuit
occurs twice continuously, only press
the switch button can recover output.
Table 5-1 Troubleshooting
Note：If no LED indications
With a multi-meter, measure the battery voltage at the battery terminal, it can
only be powered when the battery voltage is over 9V.