Airstream 390 - Manual (Page 91)

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ELECTRICAL SYSTEM
Remote Solar Charge Controller and Monitor
Manufacturer:
Intellitec
131 Eisenhower Lane North
Lombard, Illinois 60148
The solar charger monitor is used to control the output of rooftop-mounted solar panels
to the coach and chassis batteries. When the batteries are below 13 volts and there’s
output from the panels, the controller will operate in full charge mode, applying the
full output of the panels to the batteries through a relay mounted on the printed circuit
board. When the voltage on the batteries reaches 14.4 volts, the controller switches
into a current limited, constant voltage mode. In this mode, the battery voltage is
maintained at 13.6 volts at a maximum of one amp. In either of first two models, the
“CHARGING” LED on monitor panel will be lit.
When the current falls below 0.25 amps, the “CHARGING” LED goes out and the
“CHARGE” LED will come on. (See figure on this page.)
The solar charging system charges both the coach and chassis batteries.
The voltage thresholds are temperature compensated to ensure proper charge on the
batteries. (See solar charging schematic on the next page).
Problem Possible Cause/Solution
CHARGING LED Solar panel not putting out sufficient power.
Does not come on. Check for sunlight on panel.
Check voltage coming along from panel
CNE1. If low, check panel wiring.
Replace printed board.
Charged LED does not come on. More than 0.25 amps drain on batteries.
Turn off battery disconnect relays.
Batteries not charging. Check voltage from solar panel when
in sunlight.
Should be more than 15 volts.
If less, check solar panel for damage.
Check wiring from panel.
Relay K4 on board should be closed.
If not replace board.
Check for excessive drain on batteries.
Turn off battery disconnect relays to see
if charging occurs.