Electronic Idler Troubleshooting Guide - Lincoln Electric SA-250 Operator's Manual

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ELECTRONIC IDLER TROUBLESHOOTING GUIDE

Engine Will Not Return to Low Idle in Approximately 15 Seconds
Measure DC Voltage on
Idler Solenoid Coil
12 VDC
Check Continuity of
Reed Switch in Weld Circuit
Open
1. Check Wiring in
Idler Solenoid
Circuit
2. Replace Idler
P.C. Board
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.
TROUBLESHOOTING
With Idler Control Switch in the Auto Position,
After Welding and Auxiliary Loads are Removed
Set Idler Control Switch
to the Auto Position
Check for Continuity through Idler
Control Switch
Open
0 VDC
Check for Jamming
of the Idler Solenoid
Mechanism or a broken
Return Spring
Closed
Replace Reed
Switch
CAUTION
SA-250
Closed
Replace Idler
Control Switch
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