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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 appropriate circuit
breaker (CB1 or CB6). 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
appropriate source voltage at
the 14-pin amphenol.
2. If the appropriate voltage (42
VAC or 115 VAC) is NOT pre-
sent at the 14-pin amphenol,
check for loose or faulty con-
nections. 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. Perform the
Charging Circuit Test.
F-8 F-8
TROUBLESHOOTING & REPAIR
COMMANDER 500
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