Installation Guide

900-0236-01-00 Rev A 15
Troubleshooting
LED Indicators (RSI)
LED
W
hen Lit Notes
S
OLAR
O
N
(green)
DC voltage present in
system. Rapid Shutdown
switch
O
N
.
Despite the label,
S
OLAR
O
N
does not indicate that the PV
system is active. It will illuminate even if PV is completely
disconnected or if an arc fault is present. The name
indicates to responders that this control does not shut
down other parts of the electrical system. It only affects
PV-related devices.
S
OLAR
O
FF
(red)
System is in “safe” mode.
Rapid Shutdown switch
O
FF
.
This LED can also illuminate when PV and relay-trip
breakers are disconnected.
A
FCI
(red)
Not used with SkyBox. The SkyBox provides the AFCI function. It provides the
ability to see any arc faults and initiate a self-test.
If this indicator is lit, see Table 1.
Basic Troubleshooting
The following table describes known situations which can cause unexpected behavior in
the RSD-1. The table also describes all known situations which will cause the LED indicators
to light.
WARNING: Shock Hazard
An arc fault causes the AFCI to disconnect that section of the PV system to
prevent fire or shock injuries. These hazards may still exist on the array itself if
physical troubleshooting is required. Make certain to cover the PV modules and
take any other necessary steps to reduce risk.
See the next page for a table of basic troubleshooting steps.