Campbell Scientific Morningstar SunSaver-10 10A 12V Regulator - Manual (Page 6)

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5. Connect the SOLAR (PV array) next. The green LED indicator
will light if sunlight is present.
6. Connect the LOAD last. If this model includes an LVD and
the red LED indicator lights, the battery capacity is low and
should be charged before completing the system installation.
(Refer to Section 5.3)
7. The controller is shipped with a jumper installed. This sets
the controller for charging SEALED batteries.
If a FLOODED battery is being used, simply remove the
jumper to optimize the battery charging for a flooded bat-
tery. If the jumper is connected again, the charging will return
to the setpoints for a sealed battery. (Refer to Section 5.3)
8. For most effective surge protection, it is recommended that
the battery negative conductor be properly grounded.
4.0 LED INDICATORS
G
REEN
LED:
The green LED indicator will light whenever sunlight is avail-
able for battery charging. The green LED will turn off at night.
Because the SunSaver uses a PWM constant voltage charging
process, there is usually some amount of energy going into the
battery at all times. Although the charging current falls to very
low levels when the battery reaches full charge, the green LED
will continue to stay ON (during the daytime). This is to indi-
cate that the controller is working and that energy is available
from the PV array for charging.
R ED LED:
If your SunSaver model includes an automatic load disconnect
(LVD) feature, a red LED indicator is also provided. Whenever
the battery charge state falls below the LVD setpoint, the load
will be disconnected and the red LED will light. This indicates
that the controller has disconnected the load to protect the
battery from further discharge and possible damage.
After some period of recharging the battery such that it recov-
ers to approximately 40 to 50 percent of its rated capacity, the
load will automatically be reconnected and the red LED will
turn off.