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2015 Sensata Technologies
4.0 Troubleshooting
Table 4-2, Troubleshooting
Problem
Possible Cause/
Condition
Solution
AC output turns
on and off.
Search mode (PS2)
enabled, and the AC
load is <10W.
Normal condition when in
Search mode. The load
connected must be below the
AC load sense threshold of
10W; so the power output will
be pulsed every 10 sec for
checking the load.
No AC output.
Status LED is
red.
Unit has shut down.
Check the error code
shown on the display.
Verify the error condition,
and then make the necessary
correction.
AC output only
on L1/L2 output
terminals.
The inverter’s GFCI or
20A thermal breaker
has tripped.
AC Output L1/N1 terminals
are connected directly to
the inverter’s output. The
terminals are not under the
tripping in
fl
uence of either
the GFCI or the 20A thermal
breaker on the unit.
No AC output.
All the LEDs
and the display
are off.
The unit is off.
Note:
The Power
button’s on/off action
takes place at its
release moment and
after a “beep” is
heard.
Turn the unit on by pressing
the Power button (when the
unit is in Inverter mode, or
in By-Pass mode if the PS4
parameter is set). Otherwise,
the unit should always
automatically turn on at the
moment AC input power is
connected.
No power coming into
the unit.
Check the battery DC fuse,
the disconnect switch (if
installed), and the AC input
source. The AC input branch
breaker is either tripped or
turned off.
No AC output
to the GFCI and
L2/N2 output
terminals. The
Status LED is
green or amber.
GFCI tripped.
Check the AC load for a
ground fault, and reset the
GFCI. Make sure the loads
do not have the neutral and
ground bonded.
If no load plugged in to GFCI,
there may be humidity inside.
Try drying with a hairdryer.
Ensure unit is in a dry area.
Note:
The GFCI contains a lockout feature that
prevents a RESET if there is no power being supplied
to it. Therefore, make sure to force By-Pass mode
or do not have either the PS0 or PS2 setting when in
Inverter mode, before resetting.
The unit’s 20A thermal
breaker is tripped.
Check loads and reset the 20A
thermal breaker.