5.0 Operation
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5.3.3 Fault Mode Messages
The FAULT LED comes on and a fault status is displayed when an abnormal
condition is detected. View the LCD display and use the information in this
section to determine and correct the issue.
Info:
Many of the faults will automatically restart when the fault is
cleared. Some faults will require a manual restart (ON/OFF INVERTER
button on remote is pressed and released). Finally, if the fault does
not clear, an inverter reset (Section 6.2) may be required.
• AC
Backfeed
– This fault 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 condition, an inverter reset
or power reset will be required to resume operation (see Sections 6.2 & 6.3).
Remedy:
This fault usually occurs because the AC output wiring is
connected to (or able to be connected to) the incoming AC source.
When this fault happens, all system wiring should be re-checked
to ensure the incoming hot and/or neutral wires are unable to be
connected to the AC output.
• AC
Overload
– 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 lasts for less than 10 seconds, the unit will automatically
restart and resume operation. However, if the overload occurs for more than
10 seconds, the unit will shut down and will require a manual restart.
Remedy:
This fault usually 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 wired. Once the
AC loads are reduced or the output wiring is corrected, the inverter
can be restarted after a manual restart has been accomplished.
• Breaker
Tripped
– The AC input breaker on the inverter/charger has
opened due to excess current
fl
ow through the inverter to the AC loads.
Remedy:
After reducing the AC loads, push in the inverter’s AC
input circuit breaker to reset and resume operation. Ensure the
current to the inverter loads do not exceed the input breaker rating.
• Dead Battery Charge
– This fault has detected a very discharged
battery bank, or a battery bank not connected to the inverter. The unit is
attempting to enter the Charge mode, but has detected that the battery
bank is less than 9 volts (12-volt), 18 volts (24-volt) or 36 volts (48-volt).
Remedy:
Check the DC voltage on the inverter’s DC terminals
and ensure it is the same as the battery bank—these two voltages
should be very close (<0.5 VDC difference). If not, check to ensure
all connections are tight and the fuse/circuit breaker between the
inverter and battery bank is good.
This fault automatically clears if the AC input power is removed or
when the voltage is greater than 12.6 volts (12-volt models), 25.2
volts (for 24-volt models), or 50.4 volts (for 48-volt models) as
detected by the inverter.
5.3.3.1 System Fault Messages
These faults are usually caused by an external issue that directly affects the
inverter/charger system.
