Major physical or electrical damage is evident.
1.
Contact your Local Lincoln Authorized
Field service facility.
There is no wire feed or open circuit voltage
when the gun trigger is pulled. The machine dis-
plays are lit indicating input power to the
POWER MIG® 255XT.
1 The gun trigger or cable may be faulty.
Check or replace gun assembly.
2. The thermal protection circuit may be acti-
vated. If this is the case, the display will
show "too hot". “Too Hot” may also be an
indication of a defective Gun (Trigger lead
shorted to welding circuit). Allowing the
machine to cool will clear the error condition.
3. Make sure input voltage is correct and
matches nameplate rating and reconnect
panel configuration.
Machine output is low. Welds are "cold", weld
bead is rounded or bumped up demonstrating
poor wetting into plate.
1. Replace gun assembly. If problem is solved
gun assembly is faulty. Repair or replace.
2. If problem persists with new gun then the
problem is within the POWER MIG® 255XT.
TROUBLESHOOTING
If for any reason you do not understand the test pro-
cedures or are unable to perform the tests/repairs
safely, contact your LOCAL AUTHORIZED LIN-
COLN ELECTRIC FIELD SERVICE FACILITY for
assistance before you proceed.
CAUTION