Thermal Arc ULTRA FLEX 350, Owner'S Manual

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Fault Codes
The Ultra Flex ® 350 power source has several
standard protection circuits designed to assure the
reliability of the machine. Whenever one of these
circuits senses a fault, it will shut the output of the
power source off and display a fault code on the
digital display. The fault light next to the display will
also come on. To clear a fault, it will be necessary
to reset the machine by turning the main power
switch off briefly.
Prior to resetting the machine, make sure that the
cause of the fault has been identified and corrective
action taken where appropriate. The following is an
explanation of the fault codes.
“E008” — Overtemperature. This fault code indi-
cates that the overtemperature thermostat has op-
erated. Overheating of the machine could occur
because of exceeding the duty cycle rating, exces-
sive high ambient temperature, blocked air flow, fan
failure, etc.
“E012” — Ground Fault. This fault code indicates
that excessive current was flowing through the
chassis frame ground wire in the amphenol recep-
tacle. This would normally be caused by welding
current flowing through this connection because of
improper grounding of the workpiece being welded
on. Check all connections from the power source
terminals to the work and wire feeder. Check to
make sure that feed head at the wire feeder is not
shorted out to ground or to the control box.
“E014” — Inverter bus voltage too high or too
low. This could be caused by the AC input voltage
being too high, too low, or improper setting on the
voltage select switch. It could also be caused by
“spikes” or “sags” on the AC line. Check AC line
voltage. If line voltage is ok, reset the machine by
turning the main power switch off and back on. If
voltage is ok and machine will not reset, service will
be required.
“E015” — Over/under voltage of the AC line. This
fault code is caused by an input AC voltage that is
too high or too low. Check AC line voltage. Reset
the machine by turning the main power switch off
and back on.
“E016” — Could not “read” setup. This is an in-
ternal fault to the machine. Reset power source by
turning the main power switch off and back on. If
fault persists, machine will require service.
“E017” — Could not save data. This is an internal
fault to the machine. Reset power source by turning
the main power switch off and back on. If fault
persists, machine will require service.
“E018” — Overcurrent. This fault code is caused
by excessive welding current. If the welding current
exceeds the overcurrent values shown in Table 3-3
for a couple of seconds, the machine will shut off.
The overcurrent limit is lower for single phase than
it is for three phase. Reduce wire feed speed and/or
welding amperage. Reset the machine.
“E019” — Single phase error. This fault code
means that the power source has sensed a change
in the input power, from three phase to single phase.
Check line fuses. Check AC voltage at the power
source.
“E020” — Machine ID error. At power up the
Ultra Flex
®
senses the type of machine, CCCV or
PULSE. If the power source senses a change in the
ID of the machine after power up, it will shut down.
Check all connections internally for loose connec-
tions at the PC boards.
“E999” — General Fault. If the power source is
not able to identify the specific fault, it will signal a
general fault. Reset the power source by turning the
main power switch off.
430429-465
TROUBLESHOOTING
February 28, 2000 7-3