Lincoln Electric LN-10 HEADS & CONTROLS IM587-B Operator's Manual page 44

E-8
PROBLEMS
(SYMPTOMS)
ʻErʼ is displayed on power up.
ʻGLPʼ is displayed.
After pressing the trigger, wire
feeds for a couple seconds, but
stops. The voltage display reads
less than 8.0 volts while the wire is
feeding.
The knobs do not control the com-
plete range of wire feed speed or
voltage.
Gas solenoid not operating properly
or intermittent.
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
1. EEPROM error detected.
2. Damaged control p.c. board.
1. Ground Loop Protection fault
occurred
2. GLP reed switch failure.
3. Damaged control p.c. board.
1. Power source work & electrode
sense lead polarity switch or
jumper is not correctly set.
2. Damaged wiring between the con-
trol p.c. board and the work and
electrode connections.
3. Damaged control p.c. board
1. Limits are set for wire feed speed
or voltage.
2. DIP switch S1 is incorrectly set for
the wrong wire drive or gear ratio.
3. Improper power source selection
on the control p.c. board.
1. Inlet gas pressure exceeding 80
psi(5.5 bar). Verify that gas pres-
sure regulator is operating proper-
ly.
CAUSE
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.
CAUTION
LN-10
RECOMMENDED
COURSE OF ACTION
E-8