Lincoln Electric IM10102 AIR VANTAGE 650 - Manual (Page 42)

E-3 TROUBLESHOOTING E-3
Observe all Safety Guidelines detailed throughout 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
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
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 out-
put.
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.
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.
AIR VANTAGE ® 650 CUMMINS