Operation
Page 66
©
2017 Sensata Technologies
5.3.4
Fault Mode Messages
The FAULT LED
fl
ashes and a fault status is displayed when an abnormal condition is detected.
To determine which port has the fault, press the PORT button or rotate the SELECT knob until the
FAULT LED turns solid.
Info:
Many of the faults automatically clear once the fault is resolved. Some require a
manual restart. This requires the ON/OFF INVERTER button on the router to be pressed
and released. Finally, if the fault does not clear, an inverter reset (see Section 6.2) or
power-down (see Section 6.3) may be required.
5.3.4.1
System Fault Messages
These fault messages are usually caused by an external issue that directly affects the inverter/
charger system.
AC Backfeed
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
FAULT
PWR
CHG
INV
AC Backfeed
Settings/Info...
Figure 5-31, AC Backfeed Mode
• AC Backfeed (Backfeed)
– This fault message causes the inverter to shut down because AC
voltage from an external AC source has been detected on the inverter’s AC output. When the unit
shuts down because of this fault condition, an inverter reset or power-down is required to resume
operation (see Sections 6.2 & 6.3).
Remedy:
This fault usually occurs because the inverter’s AC output wiring is connected
to the incoming AC source (either hardwired or through a switch/breaker). When this
fault happens, all system wiring should be re-checked to ensure the incoming hot and/
or neutral wires are not in some way connected to the AC output.
FAULT
PWR
CHG
INV
AC Overload
Settings/Info...
AC Overload
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
Figure 5-32, AC Overload Fault
• AC Overload (AC OverL)
– This fault message displays when the AC load on the inverter/
charger’s output has exceeded the inverter’s AC current protection limits. If the overload
condition lasts <10 seconds, the unit automatically restarts and resumes operation. However, if
the overload occurs for >10 seconds, the unit shuts down and requires a manual restart.
Remedy:
This fault occurs because the connected AC loads are larger than inverter’s
output capacity, there is a wiring short on the output, or the output wires are incorrectly
installed. Once the AC loads are reduced or the output wiring is corrected, the inverter
can be restarted after a manual restart.
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