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Troubleshooting Reference
975-0376-01-01 4–3
E03: Flashing
Fault LED:
Flashing
Alarm: Beeping
Inverter is in back-
EMF (backfeed)
protection
shutdown.
The AC output is being
supplied with back-EMF
(backfeed).
Check that no other source of
electrical power is connected
to the AC output circuits of
the inverter. If motor loads are
on the inverter, it is possible
that a motor shutdown caused
back-EMF (backfeed). If the
problem persists, the motor
may not be able to be operated
by this inverter.
4 E04: Flashing
Fault LED:
Flashing
Alarm: Beeping
Inverter is in
internal over
temperature
shutdown.
E07 warning code is
ignored. (See possible
causes under error # 8 in
this table).
See solution under error # 7 in
this table.
5 E05: Flashing
Fault LED:
Flashing
Alarm: Beeping
Inverter's Input
Under Voltage
Warning Alarm is
on.
Poor battery condition
Poor DC wiring
Charge the battery.
Install a new battery.
Use proper cable size and
lengths and make solid
connections.
For more information, refer to
“Selecting Cable Sizes”
starting on page 2-6 of the
Installation Guide.
6 E06: Flashing
Fault LED:
Flashing
Alarm: Beeping
Inverter's output
overload warning
alarm is on.
Load applied is above
the continuous operation
limit.
Reduce the load if continuous
operation is required.
7 E07: Flashing
Fault LED:
Flashing
Alarm: Beeping
Internal over
temperature
warning alarm is
on.
Inverter ventilation
openings are obstructed.
Ambient temperature is
too high.
Load applied is above
the continuous operation
limit.
Improve ventilation.
Make sure the inverter’s
ventilation openings are not
obstructed.
Reduce the ambient
temperature.
Reduce the load if continuous
operation is required.
Table 4-1
Troubleshooting Reference
#
Error/Warning
Code on Display Problem Possible Cause Solution
XPower_Inverter_5000_Owners_Guide.book Page 3 Friday, April 4, 2008 2:59 PM