Troubleshooting
ProStar Operator’s Manual
69
68
5.0
battery sense terminals differs by more than five volts
from the voltage at the battery terminals.
Uncalibrated
The controller was not factory calibrated. Return the
controller to an authorized Morningstar dealer for
service.
5.2 LED Fault Indications
Solar Over-current
Error status LED: Flashing red. Battery status LEDs:
R/Y-G sequencing. When the ProStar’s rated input
current is exceeded, the unit will interrupt array
current until it falls below the controller's maximum
capacity.
If solar input exceeds 100% of the ProStar's current
rating, the average current will be reduced to the
ProStar’s maximum rating. The controller is capable of
managing up to 130% of the rated solar input. When
130% of rated current is exceeded, solar input will be
disconnected, and a fault will be indicated. The input
FET switches will remain open for ten (10) seconds.
Then the switches are closed again and charging can
resume. These cycles can continue without limit.
Load Over-current
Error Status LED: Flashing red. Battery status LEDs:
R/Y-G sequencing. If the load current exceeds
the maximum load current rating, the ProStar will
disconnect the load. The greater the overload, the
faster the load will be disconnected. A small overload
could take a few minutes to disconnect. The ProStar
will attempt to reconnect the load two (2) times. Each
attempt is approximately ten (10) seconds apart. If
the overload remains after two (2) attempts, the load
will remain disconnected until power is removed and
re-applied.
Solar Short Circuit
Charging Status LED: OFF. Solar input power wires
are short-circuited. Charging automatically resumes
when the short is cleared.
Battery Reverse Polarity
No LED indication, the unit is not powered. No
damage to the controller will result. Correct the
mis-wire to resume normal operation.
Load Short Circuit
Error status LED: Flashing red. Battery status LEDs:
R/G-Y sequencing. Fully protected against load wiring
short-circuits. After two (2) automatic load reconnect
attempts (10 seconds between each attempt) the
ProStar will wait, and then automatically reconnect the
load, once the short is cleared.
High Solar Voltage
Charging Status LED: R flashing. No battery status
indications. If the solar input open-circuit voltage (Voc)
exceeds the 60 Volt maximum rating, the array will
remain disconnected until the Voc falls safely below the
maximum voltage.