Operation; Led Indications - Morningstar SunSaver Duo Installation And Operation Manual

Step 5: Insert Fuses
Insert a 30 A dc-rated fuse into the fuse holder in each of the battery
positive wires. If the solar module(s) is in full sun, charging should begin.

OPERATION

LED Indications

The Status LED indicates system operational state and any existing
error conditions. Table 1 below defines the Status LED indications.
Off: 5 second
Green: on solid
Green: Flashing
Red: Flashing
Red: On solid
Table 1. Status LED definitions
heartbeat indication flickers the Status LED on briefly every 5 seconds
1
heartbeat indication flickers the Status LED off briefly every 5 seconds
2
Battery 1 and Battery 2 must both be in regulation
3
Red (flashing) Errors
• reverse polarity battery connection.
• reverse polarity solar connection.
• solar over-current condition.
• high temperature.
• damaged or disconnected Remote Temperature Sensor.
• high voltage disconnect.
Red (on solid) Critical Errors
• damaged local temperature sensor.
• damaged heatsink temperature sensor.
For more information on errors, see Protections section.
Status LED
heartbeat
1
(5 second
heartbeat )
2
3
(5 second
heartbeat )
2
Operating State
Night
Bulk Charging
Absorption, Float, or Equalize
Error
Critical Error
14