Lincoln Electric COMMANDER IM544-B - Manual (Page 31)

E-3 TROUBLESHOOTING E-3
COMMANDER 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
FUNCTION PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
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.
1. Idler switch in High idle position.
Set switch to Auto.
2. External load on welder or auxil-
iary power. Remove all external
loads.
1. Poor work lead connection to
work. Make sure work clamp is
tightly connected to clean base
metal.
2. ”Welding Terminals” switch is in
wrong position. Set to “Always
On” when welding without a weld-
ing terminal control cable. Refer
to Operations chapter for proper
use of this switch.
1. Auxiliary power load is less than
100 watts. Idler may not respond
with less than a 100 watt load.
Set Idler to “High”
Contact your Local Lincoln Authorized
Field Service Facility for technical
troubleshooting assistance.