6-4. Troubleshooting
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| Y Disconnect power before troubleshooting | |
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| Trouble | Remedy | |||
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Wire feeds, shielding gas flows, but | Check cable connections. Check cables for continuity, and repair or replace cables if necessary | ||||
electrode wire is not energized. | (see Section | ||||
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Wire feeder is on, display does not light | Check and reset circuit breaker at welding power source. | ||||
up, motor does not run, gas valve and |
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welding power source contactor do not |
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pull in. |
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Electrode wire feeding stops or feeds | Check gun trigger connection. See gun Owner’s Manual. | ||||
erratically during welding. |
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Check gun trigger. See gun Owner’s Manual. | |||||
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| Readjust hub tension and drive roll pressure (see Section | |
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| Change to correct size drive roll (see | |
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| Clean or replace dirty or worn drive roll. | |
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| Incorrect size or worn wire guides. | |
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| Replace contact tip or liner. See gun Owner’s Manual. | |
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| Remove weld spatter or foreign matter from around nozzle opening. | |
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| Check brushes in drive motor. If brush length is less than 1/4 inch, replace brushes. | |
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| Have Factory Authorized Service Agency check drive motor or motor control board PC1. | |
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Wire birdnests between feeder and | Gun liner has to large of diameter opening, is clogged, or the end of the gun is not close enough | ||||
gun. | to the front set of drive rolls. | ||||
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Motor runs slowly. | Check for correct input voltage. | ||||
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Wire feeder power is on, displays light | Check welding gun trigger leads for continuity, and repair leads or replace gun. | ||||
up, but unit is inoperative. |
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When triggered wire feeds but no gas, | If the welding arc does not establish in 3 seconds after the gun trigger is activated the unit will feed | ||||
no contactor. | wire, but turns off contactor and gas valve. If the gun trigger is still activated after two minutes, the | ||||
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| wire will stop feeding. | |
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