Morningstar PS-30 Manual

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Troubleshooting ProStar Operator’s Manual

5.0

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 current falls below the maximum capacity.

While rare, if array current exceeds approximately

130% of the controller’s output current rating, this fault

can occur. The fault is generally related to fast, large

battery voltage transients (connecting a very heavy

or capacitive load like an inverter) that are faster than

the controller can regulate and it shuts off to protect

the circuitry. The controller will automatically clear the

fault, and attempt to re-start in 10 seconds.

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 discon-

nect 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 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.

Solar High Voltage Disconnect

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 rating.

Remote Temperature Sensor (RTS)

Error status LED: Flashing red. Battery status LEDs:

R/Y - G/Y sequencing. A bad RTS connection or a

severed RTS wire has disconnected the temperature

sensor during charging. Charging automatically re

sumes when the problem is ﬁxed. To resume operation

without an RTS, disconnect all power to the ProStar

and then reconnect. If the controller is re-started with

the failure still present, the controller may not detect

that the RTS is connected, and the LEDs will not