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TROUBLESHOOTING
E-4 E-4
POWER WAVE 450
Machine has no output – fans run
– display is on.
Machine regularly overheats – yel-
low light (LED) on the front panel
glows, indicating a thermal over-
load. The fans run and the display
is on.
1. Make sure that the machine
was powered up with a properly
installed overlay. (With no overlay
on the machine or an invalid over-
lay, the machine will have no out-
put.)
2. Check to see if the Limits or
Setup overlay is installed on the
front panel. These two overlays
can not be used for welding.
3. Check for proper input voltage
(per machine nameplate).
4. Make certain the reconnect
panel is configured properly.
5. Check that when the trigger is
pulled on the wire feeder, the wire
feeder’s voltage display changes
to indicate arc voltage. If this does
not happen, feeder may be faulty.
6. Check feeder control cable for
loose or faulty connections.
7. If the machine is connected for
380 VAC or higher and has not
been used for a long period of
time, the capacitors may require
“conditioning.” Let the machine
run at an idle state (no load) for 30
minutes.
1. Welding application may
exceed recommended duty cycle.
2. Dirt and dust may have clogged
the cooling channels inside the
machine. Refer to the
Maintenance Section of this man-
ual.
3. Air intake and exhaust louvers
may be blocked due to inade-
quate clearance around machine.
If all recommended possible areas
of misadjustments have been
checked and the problem per-
sists, contact your local Lincoln
Authorized Field Service Facility.
TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS