Filter
Top Products
TROUBLESHOOTING GUIDE Observe Safety Guidelines
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 machine control is still active
when the remote control unit is
attached.
1. This is normal in TIG mode.
2. The remote control unit may be
defective.
3. Check the Amphenol connec-
tions and associated wiring.
1. Check Plug J10 on the Weld
Control PC board for loose or
faulty connections.
2. The Weld Control PC board
may be faulty.
The machine seems locked into the
CC mode of operation (Stick
mode).
1. Check the position of the MODE
SELECTOR switch. It must be
in the correct position for the
process being used.
2. Check that the jumper plug J3 is
properly installed in the Weld
Control PC board. (J3 has a
jumper wire from pin 1 to pin 5.)
1. Check the MODE SELECTOR
switch and associated leads.
See the Wiring Diagram.
2. The Weld Control PC board
may be faulty.
F-7 F-7
TROUBLESHOOTING & REPAIR
COMMANDER 500
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC