Troubleshooting - Miller Electric Axcess Owner's Manual

7-3. Troubleshooting

Trouble
Wire feeds, shielding gas flows, but
electrode wire is not energized.
Electrode wire feeding stops or feeds
erratically during welding. erratically during welding
Motor runs slowly.
Wire feeder power is on, displays light
up, but unit is inoperative.
OM-211 076 Page 28
Y Disconnect power before troubleshooting
Check and secure weld cable connections (see Section 4-2).
Check gun trigger connection. See gun Owner's Manual.
Check gun trigger. See gun Owner's Manual.
Readjust hub tension and drive roll pressure (see Section 4-6).
Change to correct size drive roll (see Table 9-1).
Clean or replace dirty or worn drive roll.
Incorrect size or worn wire guides.
Replace contact tip or liner. See gun Owner's Manual.
Remove weld spatter or foreign matter from around nozzle opening.
Have Factory Authorized Service Agency check drive motor or motor control board PC1.
Check for correct input voltage.
Check welding gun trigger leads for continuity, and repair leads or replace gun.
Remedy