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OUTPUT PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely,
contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed.
Call 1-888-935-3877.
CAUTION
Major physical or electrical
damage is evident.
1. Contact your local Lincoln
Authorized Field Service
Facility.
1. Contact the Lincoln Electric
Service Dept.
1-888-935-3877.
Machine is dead - no open
circuit voltage, wire feed, gas
flow when trigger is pulled and
fan does not operate.
1. Make sure correct voltage is
applied to the machine.
2. Make certain that the power
switch is in the “on” position.
3. Blown fuses in the input line.
Check circuit breaker on the
machine.
1. Check input power switch
(S1) it may be faulty. See
Wiring Diagram.
2. Check lead connection and
correct function of circuit
breaker. See Wiring
Diagram.
3. The Control P.C. Board may
be faulty
No weld output, wire feed, gas
flow when the trigger is pulled.
Fan does run.
1. The thermostat may be open
due to machine overheating. If
machine operates normal after
a cooling off period then check
for proper fan ventilation,
remove any obstructions. Make
certain that the machine’s duty
cycle is not being exceeded.
2. Gun trigger may be faulty.
1. Check thermostat and
associated leads for loose or
broken connections. See
wiring diagram.
2. Remove main power supply to
the machine. With the gun
trigger pulled check for
continuity at pins 6 and 3 on
plug J5 on the control board.
3. Perform the Transformer Test.
4. Check all heavy current
carrying leads. Check for loose
or broken connections at the
transformer, choke and
rectifier.
5. Make sure identity plug is not
missing on control board. See
Wiring Diagram.
6. Possible bad control board.
Replace.
TROUBLESHOOTING & REPAIR
F-4 F-4
COMPACT WIRE WELDERS
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