Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized
Field Service Facility
for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Input fuses keep blowing
Machine will not power up (no lights)
Machine won’t weld, can’t get any output.
This problem will normally be accompanied
by an error code. See “Status Light” section
of this document for additional information.
1. Improperly sized input fuses.
2. Improper Weld Procedure requiring out-
put levels in excess of machine rating.
3. Major physical or electrical damage is
evident when the covers are removed.
1. No Input Power
2. Input voltage is too low or too high.
1. Input voltage is too low or too high.
2. Thermal Error.
3. Secondary current limit has been exceed-
ed. (see error 54)
3a. Input control board fault (see input con-
trol board error status).
1. Make sure fuses are properly sized. See
installation section of this manual for
recommended sizes.
2. Reduce output current, duty cycle, or
both.
3. Contact your local authorized Lincoln
Electric Field Service facility for
technical assistance.
1. Make sure input supply disconnect has
been turned ON. Check input fuses.
Make certain that the Power Switch
(SW1) on the power source is in the
“ON” position.
2. Make certain that input voltage is cor-
rect, according to the Rating Plate
located on the rear of the machine.
1. Make certain that input voltage is cor-
rect, according to the Rating Plate
located on the rear of the machine.
2. See “Thermal LED is ON”
section.
3. Possible short in output circuit. If
condition persists, contact an
authorized Lincoln Electric Field Service
facility.
Basic Machine Problems
E-5
TROUBLESHOOTING
POWER WAVE
®
S350 & S350 ALUMINUM
