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POWER WAVE E500
PROBLEMS
(SYMPTOMS)
Thermal LED is ON.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
BASIC MACHINE PROBLEMS
1. Improper fan operation.
2. Output Rectifier board or Choke
thermostat.
3. DC Bus PC board thermostat.
4. Open thermostat circuit.
CAUSE
E-5
TROUBLESHOOTING
RECOMMENDED
COURSE OF ACTION
1. Check for proper fan operation. (Fans
should run whenever output power is
on.) Check for material blocking intake
or exhaust louvers, or for excessive dirt
clogging cooling channels in machine.
2. After machine has cooled, reduce load,
duty cycle, or both. Check for material
blocking intake or exhaust louvers and
heat sink fins.
3. Check for excessive load on 40VDC
supply.
4. Check for broken wires, open
connections or faulty thermostats on the
DC Bus and Output Rectifier heat sinks,
and Choke assembly.
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