Morningstar SUNSAVER DUO, Installation And Operation Manual

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Damaged Local Temperature Sensor
– The local ambient temperature
sensor is short-circuited or damaged. Charging stops to avoid over- or
under-charging. This is a critical error.
Damaged Internal Temperature Sensor
– The internal heatsink tem-
perature sensor reading is damaged. This is a critical error.
Remote Temperature Sensor (RTS)
– A bad RTS connection or
severed RTS lead has disconnected the temperature sensor during
charging. Charging automatically resumes when the problem is fixed.
To resume operation without an RTS, disconnect all power to the
SunSaver Duo and then reconnect.
High Voltage Transients
– Battery 1, Battery 2, and Solar input power
connections are protected against high voltage transients. In lightning
prone areas, additional external suppression is recommended.
Inspection and Maintenance
The following inspections and maintenance tasks are recommended at
least two times per year for best controller performance.
• Tighten all terminals. Inspect for loose, broken, or corroded
connections.
• Verify all wire clamps and tie-downs are secure.
• Check that the controller is mounted in a clean protected
environment free of dirt, insects, nests, and corrosion.
• Check enclosure ventilation and air flow holes for obstructions
if applicable.
• Verify LED indication is consistent with the system conditions at
that time.
• Verify that the Remote Temperature Sensor (if used) is securely
attached to the battery.
TECHNICAL SPECIFICATIONS
ELECTRICAL
• Nominal system voltage .............. 12 V
• Max. solar current ........................ 25 A
• Battery voltage range .................. 1 V – 15 V
• Max. solar voltage ........................ 30 V
• Self-consumption .......................... 5.5 mA (night)
10.0 mA (charging)
• Accuracy
Voltage ............................................ 1.0 %
Current ............................................ 2.0 %