5.0 Operation
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Note 1:
The inverter continually monitors several internal components and
will shut down to help protect itself if an “internal” faults occurs.
Remedy:
If an “internal” fault occurs, perform an inverter or power
reset to clear it (see Sections 6.2 & 6.3). After the reset, press the
ON/OFF INVERTER pushbutton on the remote to turn the inverter
on. If the internal fault remains or returns, the inverter will require
repair at an authorized service facility.
• Internal
Relay
1
– This fault message displays when the internal AC
transfer relay is not closed while charging.
• Internal
Bridge
1
– This fault message displays when the FET bridge
shuts down after the inverter has been inverting—the inverter output circuit
can no longer detect any AC output voltage or current.
• Internal
Charger
1
– This fault message displays when the FET bridge
shuts down because the charger circuit is trying to provide maximum current,
but is not detecting a current or voltage rise to the battery bank.
• Internal
NTC
1
– This fault message displays when the internal NTC
(Negative Temperature Coef
fi
cient) sensor suddenly detected a very large
but unexpected temperature change.
• Low
Battery
– The inverter turned off to prevent the batteries from
being over-discharged. The fault message occurs when the battery voltage
drops below the SETUP menu’s
02 LowBattCutOut
(LBCO) setting for more
than one minute.
Remedy:
This fault clears and the inverter automatically will restart
and resume operation after one of the following conditions: 1. If the
battery voltage rises to the inverters LBCI level; or, 2. If AC power
is connected to the inverter’s input and battery charging begins.
• Overcurrent
– This fault shuts down the inverter to protect internal
power components. It may be caused by an excessive load connected to the
inverter’s AC output. If the overload condition lasts for less than 10 seconds,
the unit will automatically restart and resume operation. However, if the
overcurrent condition 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 the inverter’s output capacity, there is a wiring short
on the AC output, or the wires are incorrectly installed. Once the
AC loads are reduced or the output wiring is corrected, manually
restart the inverter to resume operation. If this fault condition
continues after all these recommendations, perform a inverter reset
(see Section 6.2).
• Overtemp
– This fault message indicates the inverter/charger has shut
down because the internal power components (FET’s and/or transformer)
have exceeded their safe temperature operating range. Once the unit has
cooled down, the fault automatically clears and the unit will automatically
restart and continue operation.
Remedy:
If this fault occurs while inverting, reduce the inverter
loads. If it occurs when charging, lower the charge rate. If this fault
happens often, ensure the inverter is not in a hot area, has proper
ventilation, and the cooling fans inside the inverter are working.