© 2010 Magnum Energy, Inc.
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5.0 Operation
Dead Battery Charge
– This fault indicates a discharged battery bank
or one that is disconnected from the inverter. The unit is attempting to enter
Charge mode, but has detected less than 7 volts (12-volt models), 14 volts
(for 24-volt models) or 28 volts (for 48-volt models) on the battery bank.
This fault will continue until current is able to
fl
ow into the battery from the
battery charger. Once this happens, the fault will automatically reset.
Remedy:
Check DC voltage on the inverter’s DC terminals and
compare it with the DC voltage on 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.
Overcurrent
- This fault may be the result of an excessive AC load
and causes the inverter to shut down to protect internal power components.
If the overload condition lasts for less than 10 seconds, the unit automatically
restarts and resumes operation. However, if the overcurrent condition occurs for
more than 10 seconds, the unit shuts down and requires 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 wired.
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 of these recommendations, perform
a inverter reset (see Section 6.2).
FET Overload
-
This fault message indicates the inverter/charger has
shut down because the internal FETs (Field Effect Transistors) have quickly
exceeded a safe operating temperature. When the FETs cool, the unit requires
a manual restart to resume operation.
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•
•
FAULT
PWR
CHG
INV
Dead Batt Charge
Settings/Info...
Dead Batt Charge
appears on the LCD
and the FAULT (red) LED is on. The PWR
(green), CHG (green), and INV (green)
LEDs are off.
Figure 5-23, Dead Battery Charge Fault
Overcurrent
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
Overcurrent
Settings/Info...
Figure 5-24, Overcurrent Fault
FAULT
PWR
CHG
INV
FET Overload
Settings/Info...
FET Overload
appears on the LCD
and the FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
Figure 5-25, FET Overload Fault