TriStar Manual

43TriStar MPPT Operator’s Manual
Battery Voltage Sense Failure (R+Y / G+Y)
If a fault in the battery sense connection (such as a short circuit, open circuit or loose terminal)
occurs after the battery sense has been working, the LEDs will indicate a failure. If the control-
ler is restarted with the failure still present, the controller may not detect that the battery sense is
connected and the LEDs will not indicate a fault. A TriStar meter or the PC software can be used
to determine if the battery sense is working properly.
Battery Over-Current (R+Y / G)
While rare, if battery charging 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
re-start in 10 seconds.
Settings (DIP) Switch Changed (R / Y / G sequencing)
If a settings switch is changed while there is power to the controller, the LEDs will begin sequenc-
ing and the solar input will disconnect. The controller must be re-started to clear the fault and
begin operation with the new settings.
Battery High Voltage Disconnect (G / R sequencing)
This fault is set when battery voltage is above normal operating limits. The controller will discon-
nect the solar input and set a High Voltage Disconnect fault. This fault is commonly caused by
other charging sources in the system charging the battery above the TriStar MPPT 150V regula-
tion voltage. When the battery voltage returns to normal levels, the fault will automatically clear.
Custom Settings Edit (R / Y / G sequencing)
Avaluehasbeenmodiedincustomsettingsmemory.Thecontrollerwillstopchargingand
indicateafaultcondition.Afterallsettingshavebeenmodied,thecontrollermustberesetby
removing and then restoring power to the controller. The new programmed settings will be used
after the power reset.
Firmware Update Failure (Y / R)
Thermwareupdatewasnotsuccessfullyprogrammed.Thecontrollerwillnotindicatethefull
power-up LED sequence of G / Y / R when power to the controller is reset. Instead, the controller
will display green and then stop on yellow. The yellow LED will continue to be lit and the control-
lerwillnotcompletestartuporbegincharging.Retrythermwareupdate.Thermwaremustbe
successfully loaded before the controller will start up.