Neptune 13458-000, Installation And Maintenance Manual

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LED Error Indications
The following tables describe how to interpret the LED error
indications.
Error Condition LED Status
Solar overload Flashing red
High voltage disconnect Flashing red
High temperature disconnect Flashing red
Damaged local temperature sensor Solid red
1
Damaged heat-sink temperature
sensor Solid red
1
Damaged input MOSFETs Solid red
1
Firmware error Solid red
1
1 A heartbeat indication flickers the Status LED off briefly every five seconds. A solid red Status
LED indicates that a critical fault has been detected. Critical faults typically indicate that the
controller is damaged and requires service.
Table 17 – Charging Status LED Error Indications
Error Condition LED Status
High voltage disconnect R-G sequencing
1
High temperature disconnect R-Y sequencing
2
External wiring error R&G-Y sequencing
3
Load overcurrent R&G-Y sequencing
Load short circuit R&G-Y sequencing
Self-test error R-Y-G sequencing
4
1
R-G sequencing means that the red LED is on, then the green LED is on, then red LED is on,
and so forth.
2
R-Y sequencing means that the red LED is on, then the yellow LED is on, then red LED is on and
so forth.
3
R&G-Y sequencing means that both the red LED and green LED are on, then just the yellow
LED is on, then red and green LED are on, and so forth.
4
R-G-Y sequencing means that the red LED is on, then the green LED is on, then the yellow
LED is on, then the red LED is on, then the green LED is on, and so forth.
Table 18 – Battery Status LED Error Indications
R900 Gateway Installation and Maintenance Guide 87
Appendix A Solar Power Information