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
Thermal LED is ON
Thermal LED is ON
“Real Time Clock” no longer functioning
General degradation of weld performance
Improper fan operation
1. Improper fan operation.
2. Open thermostat circuit.
1. Control PC Board Battery.
1. Wire feed problem.
2. Cabling problems.
3. Loss of, or improper Shielding Gas.
4. Verify weld mode is correct for process.
5. Machine calibration.
1. Check for proper fan operation. Fan
should run in a low speed setting when
the machine is idle and in a high speed
when the output is triggered. Check for
material blocking intake or exhaust
louvers, or for excessive dirt clogging
cooling channels in machine.
2. Check for broken wires, open
connections or faulty thermostats in the
thermostat circuit.
1. Replace the battery (Type: BS2032)
1. Check for feeding problems.
2. Check for bad connections, excessive
loops in cable, etc.
NOTE:
The presence of heat in the external
welding circuit indicates poor connections
or undersized cables.
3. Verify gas flow and type are correct.
4.Select the correct weld mode for the
application.
5. The power source may require
calibration. (current, voltage, WFS).
E-6
TROUBLESHOOTING
POWER WAVE
®
S350 & S350 ALUMINUM
Basic Machine Problems (Continued)
Weld and Arc Quality Problems
