Lincoln Electric DUAL VANTAGE 700 (AU) Operator's Manual page 41

DUAL VANTAGE ® 700 (AU)
PROBLEMS
(SYMPTOMS)
Battery does not stay charged.
Engine will not idle down to low
speed.
Engine will not go to high idle when
attempting to weld.
Engine will not go to high idle when
using auxiliary power.
Engine goes to low idle but does not
stay at low idle.
No welding output or auxiliary
output in Single Mode or Dual Mode.
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.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
1. Faulty battery .
2. Faulty engine alternator.
3. Loose or broken lead in charging
circuit.
4. Loose fan belt may need tighten-
ing.
1. Idler switch in HIGH idle position,
make sure switch is set to AUTO.
2. External load on welder or auxil-
iary power.
3. Mechanical problem in idler sole-
noid linkage.
4. Faulty wiring in solenoid circuit.
5. No or low voltage @ idle solenoid
6. Faulty idler solenoid.
7. Faulty Weld Control PCB (Printed
Circuit Board) or Engine Control
Units.
1. Poor work lead connection to
work.
2. Broken idler solenoid spring.
3. Welding Terminals switch in
wrong position.
4. No open circuit voltage at output
studs.
5. Faulty Engine Control Units or
Weld Control PCB.
1. Broken wire in auxiliary current
sensor wiring.
2. Auxiliary power load is less than
100 watts.
3. Faulty Engine Control Units or
Weld Control PCB.
1. Faulty Idler / Engine Shutdown
PCB or Weld Control PCB.
1. Broken lead in one of the rotor
circuits.
2. One of the field diode modules
are faulty.
3. Faulty Weld Control PCB.
4. One of the rotors are faulty.
5. Faulty Selector Switch.
CAUSE
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
CAUTION
E-3
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION