8-4. Troubleshooting Help Aids
1 Stud Count LED
2 Ready LED
3 Output LED
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Front Panel | Ready LED Status | Possible Symptom | Remedy | |
Error Indication | ||||
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Normal/None | On | No problem | N/A | |
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HELP 1 | Off | Malfunction in the primary power cir- | Contact a factory authorized service | |
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| cuit. | agent. | |
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HELP 2 | Off | Malfunction in the thermal protections | Contact a factory authorized service | |
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| circuitry. | agent. | |
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HELP 3 | Off | Unit has overheated. | Unit has shut down to allow the fan to | |
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| cool it (See Section | |
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| will continue when the unit has cooled. | |
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HELP 4 | Off | Trigger circuit is closed when unit was | Open trigger circuit and cycle power. | |
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| powered on. |
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HELP 5 | Off | The unit has sustained an Open Circuit | Cycle power. Apply a welding load. If | |
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| Voltage for more than 10 seconds. | problem persists, contact a factory au- | |
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| thorized service agent. | |
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HELP 6 | Off | Input voltage is either under/low volt- | Unit has automatically shut down. Op- | |
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| age or high/over voltage. | eration will continue when input voltage | |
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| is within an acceptable limit. Have an | |
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| electrician check the input voltage. | |
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| DC bus voltage imbalance. | If input voltage is correct, contact au- | |
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| thorized factory service agent. | |
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8-5. Troubleshooting - Power Source
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| Trouble |
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No weld output; unit completely inop- | Place line disconnect switch in On position (see Section | |||
erative. |
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| Check and replace line fuse, if necessary, or reset circuit breaker (see Section | |
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| Check for proper input power connections (see Section | |
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No weld output. | Input voltage outside acceptable range of variation (see Section | |||
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| Unit overheated. Allow unit to cool with fan On (see Section | |
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Erratic or improper weld output. | Use proper size and type of weld cable (see Section | |||
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| Clean and tighten all weld connections. | |
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