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Troubleshooting
12NP Manual
Troubleshooting Guide
No AC output
during inverter
mode
No LED’s On
Check the in-line fuse which is located within 18 inches from
the battery’s positive (+) post
Check if DC connections are tight and clean
Check if battery voltage is above 10.5 VDC
Check remote power switch
LED blinks amber once
Disconnect all loads and
connect a test light to the
GFCI outlet
Check if GFCI is tripped
If test light is off, possible
failed inverter
LED blinks green
Disconnect all loads and
connect a test light to the
GFCI outlet
Check if GFCI is tripped
If test light is off, possible
failed inverter
LED blinks red
See “LED Status Chart”
Low Battery
The use of a battery isolator
is not recommended due to
an excessive voltage drop
across terminals.
Battery voltage must be above the low battery setpoint for the
inverter to be on.
Check for proper DC wire gauge
(see Wire Gauge & Fusing section)
Overload
Unplug all loads and reset the
inverter
If overload condition clears, check for short circuits or check
load size versus inverter output wattage size.
If the overload persists, possible failed inverter
High
Temperature
Let the inverter cool down and check that the vents are not obstructed and that the fans are
functioning.
Check Battery
Reset the inverter (unplug/
plug AC input cord from the
utility power) and remove the
fuse from the fuse holder.
Turn “on” the inverter for
30 seconds. Turn “off ” the
inverter. Re-install the fuse.
Check for shorted battery cell or corroded/loose DC wires
Check voltage and current against charger recipe table
Undercharged
Battery
Check battery type selection. For LFP battery type, check battery amp-hr setting.
Table 14 Troubleshooting Guide
