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TROUBLESHOOTING & REPAIR
F-8 F-8
COMMANDER 300
Observe Safety Guidelines
TROUBLESHOOTING GUIDE
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 test/repairs safely,
contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
The wire feeder does not work
when connected to the welder
amphenol.
1. Check the circuit breaker (CB5).
Reset if tripped.
2. The wire feeder control cable
may be faulty.
3. The wire feeder may be faulty.
1. Check for the presence of
115VAC at leads #31(J) and
#32(A) at the 14-pin amphenol.
2. If the 115VAC is NOT present at
the 14-pin amphenol, check
leads #31 and #32 for loose or
faulty connections. See the
Wiring Diagram.
3. Perform the Stator Voltage
Test.
The battery does not stay charged. 1. Check for loose or faulty con-
nections at the battery and
engine charging system.
2. The battery may be faulty.
Check or replace.
1. The battery charging circuit may
be faulty. See the Wiring
Diagram.