7-2. Diagnostics (Continued)
| RMD |
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| OVER |
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| REL |
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| TRIG |
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| ERR |
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| TRIG |
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| STUK |
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| UNKN |
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| DONE |
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| AVER |
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| COMM |
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| Indicates a contactor | Indicates a trigger | Indicates an | ||||||
| Indicates RMD | Indicates an over |
| Indicates a CRC |
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| demo is done. | average current error. |
| PCM bus error. |
| on error. | closed error. | unknown error. | ||||||||||
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RMD DONE |
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| UNIT COMM |
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| TRIG STUK |
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• The RMD done message indicates the | • The unit communication error indicates |
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| RMD demo is completed. Pressing | • The trigger stuck error indicates the user | ||||||||||||||||
| the data bus on the PCM board is not | |||||||||||||||||
| Jog/Purge button will change the screen to | functioning properly. Press Jog/Purge |
| held the gun trigger during power up. Press | ||||||||||||||
| CYCL PWR on the display. Turn unit power |
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| button to clear error. |
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| Jog/Purge button to clear error. | ||||||||||||
| off and back on again. |
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OVER AVER |
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| REL TRIG |
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| ERR UNKN |
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• The over average error indicates that | • The release trigger error indicates the |
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| current is outside the average range for the | user held the gun trigger after a timed weld | • The unknown | error indicates a | ||||||||||||||
| set program parameters. Check and correct | was completed causing the contactor to | ||||||||||||||||
| program parameters. Press Jog/Purge | remain on. Press Jog/Purge button to clear |
| malfunction in the system somewhere. | ||||||||||||||
| button to clear error. |
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| error. |
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| Press Jog/Purge button to clear error. | |||||||
7-3. Troubleshooting
| Y Disconnect power before troubleshooting |
Trouble | Remedy |
Wire feeds, shielding gas flows, but | Check and secure weld cable connections (see Section |
electrode wire is not energized. |
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Electrode wire feeding stops or feeds | Check gun trigger connection. See gun Owner’s Manual. |
erratically during welding. | Check gun trigger. See gun Owner’s Manual. |
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| Readjust hub tension and drive roll pressure (see Section |
| Change to correct size drive roll (see Table |
| 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. |
Motor runs slowly. | Check for correct input voltage. |
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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