Lincoln Electric IM989 VANTAGE 400 - Manual (Page 35)

E-4 TROUBLESHOOTING E-4
VANTAGE ® 400
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
Engine will not go to high idle when
using auxiliary power.
Engine will not go to high idle under
weld or auxiliary loading.
Engine does not develop full
power. Engine runs rough.
Engine will not go to high idle when
attempting to weld or using auxil-
iary power. Switching to manual
high idle does not work.
Engine will not shut off.
Engine does not develop full power.
Low weld and auxiliary output.
Engine runs rough.
1. Auxiliary power load is less than
100 watts. Idler may not respond
with less than a 100 watt load. Set
idler to "High".
2. Faulty PC board.(Control or Idler).
1. Faulty idler solenoid. Check for
bent linkage or broken spring.
2. Faulty PC board.(Control or Idler).
1. Fuel filter clogged, Replace.
2. Air filter clogged, clean or replace.
3. High idle setting incorrect, check
and adjust if required.
4. Valves out of adjustment.
5. Fuel contaminated with water or
sediment. Check fuel pre-filter
and empty of water, bleed fuel
system. Replace fuel in tank if
needed.
1. Broken spring on Idle Solenoid,
solenoid linkage binding, Faulty
PC board (Control or Idler), low
idle speed set too low on idle
solenoid.
1. Fuel Shutdown solenoid not func-
tioning properly / linkage binding.
Stop engine by shutting off valve
located on main fuel filter. Contact
authorized local Engine Service
Shop.
1. Fuel filter dirty/clogged. Replace.
2. Air filter dirty/clogged. Replace Air
Filter Element.
3. Fouled fuel injector(s). Contact
authorized Engine Service Shop.
4. Fuel contaminated with water.
Check water separator for water.
Clean and replace as needed.
Replace fuel in tank.
5. Cracked or loose fuel hose.
Replace hose and tighten clamps.
6. Valves out of adjustment. Contact
authorized local Engine Service
Shop.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.