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Error Condition
Battery HIGH LED (red) is ON,
buzzer is ON.
Battery LOW LED (green) is ON,
buzzer is ON.
OVERTEMP LED (red) is ON,
buzzer is ON.
OVERLOAD LED (green):
- turns ON after the inverter was
running large loads.
- turns ON when the inverter is
OFF.
- flickers for 5–10 seconds, then
turns ON. Loud hum when an AC
source is connected to the
inverter.
- turns ON and the inverter clicks
ON and OFF every 40 seconds.
- turns ON when charging.
INVERTER MODE LED:
- turns ON with no AC output.
- is flashing and no AC output.
Troubleshooting
Possible Cause
The battery voltage is above the
high battery voltage input tolerance.
Battery over-discharge circuit is ON.
Battery voltage is below the low
battery discharge tolerance.
AC input voltage may be too high.
The inverter is powering a large
load for a long time.
Ambient temperature may be high
or inverter cooling fan may have
failed.
Air-vents blocked.
Excessive load on the AC output.
Indicates the AC source is wired
directly to the inverter's output.
Indicates the AC source is wired
directly to the inverter's output.
Indicates the inverter's output is
wired to its input.
Charging circuit may be damaged.
AC source voltage is okay on
inverter's input. No AC output.
The load is too small for the search
mode to detect.
Solution
Use a DVM and measure the voltage at the
inverter's DC input terminals. Ensure the DC
source is regulated below the High Battery
Cutout voltage.
Charge batteries or disable the OVER-
DISCHARGE PROTECTION.
Use a DVM and measure the voltage at the
inverter's DC input terminals.
Check for an external DC load on the
batteries.
Check the condition of the batteries and
recharge if necessary.
Check the AC INPUT circuit breaker and reset
if necessary.
Use an AC DVM and measure the input
voltatge.
Remove excessive loads.
Let inverter cool down before restarting.
Check inverter's cooling fan.
Check for obstructions in air-vents. Clean if
necessary.
Reduce the AC load.
Check input and output wiring.
Check input and output wiring.
Check input and output wiring.
Have inverter/charger serviced.
Check for open AC output breakers or fuses.
Check AC wiring connections.
Have unit serviced.
Reduce or defeat the AC search watts setting.
Increase the AC load.
975-0012-015-A
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