Lincoln Electric RANGER 305G EFI Service Manual page 27

LINCOLN ELECTRIC
Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The engine will not go to high
idle when striking an arc. The
automatic idle system functions
normally when using auxiliary
power. Welding and auxiliary
outputs are normal when the
idle switch is in the "HIGH IDLE"
position.
The engine will not go into high
idle when attempting to strike
an arc or when a load is applied
to any of the auxiliary power
receptacles. Welding and
auxiliary outputs are normal
when the idle switch is in the
"HIGH IDLE" position.
The engine goes to low idle, but
will not stay at low idle.
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 1-888-935-3877.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
ENGINE AND IDLE PROBLEMS
1. Check that the welding
cables are in good condition
and the connections are tight.
Make sure that work clamp is
attached to clean, bare metal.
1. Check that the welding
cables and the auxiliary power
lead connections are tight.
1. Make sure there are no
external loads on either the
weld terminals or the auxiliary
receptacles.
2. Check that the welding
cables and the auxiliary power
lead connections are tight and
that the insulation is
undamaged.
Ranger® 305G EFI Service Manual
TROUBLESHOOTING GUIDE
RECOMMENDED
COURSE OF ACTION
1. Perform the Weld Control
Board Feedback Test
Procedure.
2. The weld control board may
be defective.
1. The weld control board may
be defective.
1. The idler solenoid linkage
may be damaged or out of
adjustment. Make sure the
solenoid plunger is able to fully
seat against the internal stop of
the solenoid coil assembly.
2. The low idle RPM may be
too low.
3. The solenoid hold coil power
circuit may be faulty. Check
wiring and connections on lead
210C and lead 215.
4. The weld control board may
be defective.
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