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TriStar MPPT Operator’s Manual
4.4 LED Indications
Valuable information can be provided by the three LED’s visible through the front cover. Although
there are many different LED indications, they have similar patterns to make it easier to interpret
each LED display. Consider as three groups of indications: General Transitions // Battery Status
// Faults & Alarms.
LED Display Explanation
G = green LED is lit
Y / R = yellow LED is lit, then red LED is lit
G+Y = Green and Yellow are both lit at the same time
G+Y / R = Green & Yellow both lit, then Red is lit alone
Sequencing LED patterns (faults) repeat until the fault is cleared
General Transitions
• Controller start-up
G / Y / R (one cycle)
• Equalize request start
G+Y+R / G+Y+R / G / G
• Equalize cancelled
G+Y+R / G+Y+R / R / R
• Battery service is required*
all 3 LED’s blinking until service is reset
*battery service notifi cation is only enabled in custom settings
Battery Status
• General state-of-charge
see battery SOC indications below
• Absorption state
G blinking (½ second on / ½ second off)
• Equalization state
G fast blink (2 to 3 times per second)
• Float state
G slow blink (1 second on / 1 second off)
Faults & Alarms
• Over-temperature
Y / R sequencing
• High voltage disconnect
G / R sequencing
• DIP switch fault
R / Y / G sequencing
• Self-test faults
R / Y / G sequencing
• Remote Temperature Sensor (RTS)
G+Y / Y+R sequencing
• Battery voltage sense
G+Y / Y+R sequencing
