Neptune 13458-000, Installation And Maintenance Manual

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Red LED
The SunSaver Gen 2 includes an LVD feature indicated by a red
LED. Whenever the battery charge state falls below the LVD set-
point (11.5V), the load is disconnected, and the red LED
illuminates. 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, so that it
recovers almost 40 to 50 percent of its rated capacity (12.6V), the
load automatically reconnects and the red LED is unlit.
SunSaver Gen 3
The SunSaver Gen 3 solar controller has different LED status
lights than the SunSaver Gen 2. See Figure 101.
Figure 101 – Gen 3 Solar Controller
Charging Status LED
The charging status LED indicates controller state and any
existing solar input error conditions. The charging status LED is
on when charging during the day and off at night. The charging
status LED flashes red whenever an error condition exists. Table
15 on the next page lists the charging status LED definitions.
R900 Gateway Installation and Maintenance Guide 85
Appendix A Solar Power Information