Troubleshooting, Caution – Lincoln Electric CV-655 User Manual
Page 28
E-5
TROUBLESHOOTING
E-5
CV-655
Observe all Safety Guidelines detailed througout this manual
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.
CAUTION
PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Machine will not weld. OCV is less
than 1 volt.
The wire feeder will not come on.
Poor starting.
1. The machine may be in a over-
load condition. Remove the short
circuit or excessive load on the
output terminals.
2. See the PC board LED informa-
tion.
1. Either the 42VAC or the 115VAC
circuit breakers may be tripped.
Reset if necessary.
2. Check for the presence of the
required voltage to operate the
wire feeder.
3. The control cable or wire feeder
may be faulty.
1. The capacitor discharge resistor
(R2) may be faulty. See wiring
diagram.
2. The control board may be faulty.
See PC board LED information.
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact your local Lincoln
Authorized Field Service Facility.