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• Check that the proper battery type has been selected.
• Disconnect the solar array, and remove the battery wire from the ProStar battery
positive (+) terminal. Wait a few seconds and reconnect the battery positive terminal
(leaving the solar array disconnected). After start-up, the green CHARGING LED
should not be on. Measure the voltage at the SOLAR terminals (with the array still
disconnected). If battery voltage is measured at the SOLAR terminals and the green
LED is on, the controller may be defective.
CAUTION:
If your ProStar is a positive ground version, references above to
Battery (+) terminals should be Battery (–) negative terminals.
3. LOAD IS NOT OPERATING PROPERLY
• Check that the load is connected and turned on. Confirm that no fuses or circuit
breakers in the system are tripped (there are no fuses or circuit breakers inside the
ProStar).
• Check all connections to the load, and battery connections. Make sure voltage drops
in the system are not too high (a voltage drop to the load will reduce the voltage at
the load).
• Check the LED indications on the ProStar. If the red status LED is on, the load has
been disconnected due to low battery voltage (LVD). This is a normal protection
function of the ProStar, and the load will be automatically reconnected when the
battery is charged by the solar array.
• If the LEDs are blinking, the load may have been disconnected for protection from
one of the following faults:
– short circuit or overload (R/G–Y sequencing)
NOTE:
After 3 automatic retries, the fault must be cleared and the load must be
switched off or disconnected for 10 seconds or longer to restore power
to the load terminals
– high temperature (R–Y sequencing)
– high voltage (R–G sequencing)
• Measure the voltage at the BATTERY terminals. If above LVD and no faults are
present, the load should have power. Then measure the voltage at the LOAD
terminals, and if there is no voltage present the controller may be defective.
NOTE:
For more technical and testing information, visit Morningstar’s Website:
www.morningstarcorp.com
