Technical information
PV Grid-tied Residential Inverter and Integrated AC/DC Disconnect
Installation and Operation Manual
31
Red LED is illuminated when:
• The PV array voltage is not within required operating limits, such as:
• At sunset, when the inverter turns off for the night.
• When clouds reduce the amount of available sunlight or when por-
tions of the PV array are covered with debris.
• Any time the DC output from the PV array drops below the in-
verter’s minimum DC operating voltage, the inverter turns off.
• The DC polarity input has reversed conductors. No message is dis-
played in this situation.
When the array is once again exposed to enough sunlight, the green LED
illuminates, the inverter’s auto-start feature begins, and after ve minutes
the inverter begins to export power.
If the red LED continues to illuminate when there is sufcient sunlight
for operation, verify that no wiring connections are loose. If the wiring
is secure, see Chapter 6,
Troubleshooting
on page 33 for additional
information.
The vacuum uorescent display (VFD) indicates the inverter’s status
and real-time power output into the AC grid. This display provides the
following information:
• Inverter model type.
• AC power produced in real time (watts).
• Lifetime energy produced (kWh).
• AC voltage in real time (VAC).
• PV voltage input in real time (VDC).
• During start-up, a count-down timer.
• Fault code message if a fault exists or recently occurred.
Normal Display Cycle
The display changes every two seconds to show a different set of
information as shown in Figure 5-1 and Figure 5-2.
Screen 1 Screen 2 Screen 3
Figure 5-1 Normal Startup Screens