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Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
Input fuses keep blowing
Machine will not power up (no lights)
Machine wonʼt weld, canʼt get any
output.
This problem will normally be
accompanied by an error code. See
"Status Light" section of this docu-
ment for additional information.
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.
TROUBLESHOOTING
POSSIBLE
CAUSE
Basic Machine Problems
1. Improperly sized input fuses.
2. Improper Weld Procedure requir-
ing output levels in excess of
machine rating.
3. Major physical or electrical dam-
age 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
exceeded. (see error 54)
3a. Input control board fault (see
input control board error status).
CAUTION
POWER WAVE
C300
®
RECOMMENDED
COURSE OF ACTION
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 discon-
nect has been turned ON. Check
input fuses. Make certain that the
Power Switch (SW1) on the
power source is in the "ON" posi-
tion.
2. Make certain that input voltage is
correct, according to the Rating
Plate located on the rear of the
machine.
1. Make certain that input voltage is
correct, according to the Rating
Plate located on the rear of the
machine.
2. See "Thermal LED is ON" sec-
tion.
3. Possible short in output circuit. If
condition persists, contact an
authorized Lincoln Electric Field
Service facility.
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