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E-5
TROUBLESHOOTING
POWER WAVE
®
E500
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
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
BASIC MACHINE PROBLEMS
Thermal LED is ON.
1. Improper fan operation.
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. Output Rectifier board or Choke
thermostat.
2. After machine has cooled, reduce load,
duty cycle, or both. Check for material
blocking intake or exhaust louvers and
heat sink fins.
3. DC Bus PC board thermostat.
3. Check for excessive load on 40VDC
supply.
4. Open thermostat circuit.
4. Check for broken wires, open
connections or faulty thermostats on the
DC Bus and Output Rectifier heat sinks,
and Choke assembly.