Troubleshooting
17Fault codes
| Code | Meaning | Remedy |
|---|---|---|
| HELP 1 XX | HELP IN — Indicates a malfunction in the primary power circuit | Contact a Factory Authorized Service Agent |
| HELP 2 XX | HELP TEMP — Indicates a malfunction in the thermal protection circuitry | Contact a Factory Authorized Service Agent |
| HELP 3 XX | HELP TEMP — Indicates the left side (secondary) of the unit has overheated. The unit has shut down to allow the fan to cool it | Operation will continue when the unit has cooled (see Section 4-9) |
| HELP 4 XX | HELP TEMP — Indicates the auxiliary circuit has overheated. The unit has shut down to allow the fan to cool it | Operation will continue when the unit has cooled |
| HELP 5 XX | HELP TEMP — Indicates the right side (primary) of the unit has overheated. The unit has shut down to allow the fan to cool it | Operation will continue when the unit has cooled (see Section 4-9) |
| HELP 6 XX | HELP LINE — Indicates machine has sensed a primary power circuit fault | Turn off unit for five minutes and try again; Verify correct primary voltage (see Section 5-9); If fault remains, contact a Factory Authorized Service Agent |
| HELP 7 XX | HELP LINE | |
| HELP 8 XX | HELP OUT — Indicates a malfunction in the secondary power circuit of the unit | Verify electrode is not touching workpiece when in Gouge or Stick modes; Check external weld circuit configuration of multiple power sources connected to the common work piece; Repair as necessary; If fault remains, contact a Factory Authorized Service Agent |
| HELP 25 XX | HELP DUTY — Indicates machine has reached Duty Cycle limit | Unit must be left on to power the fan for cooling; Duty Cycle limit will automatically reset when unit has cooled (see Section 4-9) |
Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| No weld output; unit completely inoperative | Place line disconnect switch in On position (see Section 5-10) | |
| No weld output; meter display On | Input voltage outside acceptable range of variation (see Section 5-9) | |
| No weld output; meter display On | Remote control fault | Check, repair, or replace remote control |
| No weld output; meter display On | Unit overheated | Allow unit to cool with fan On (see Section 4-9) |
| Erratic or improper weld output | Use proper size and type of weld cable (see Section 5-3) | |
| No 24 volts AC output at Remote 14 receptacle | Reset supplementary protector CB2 (see Section 5-7) | |
| No 115 volts AC output at duplex receptacle | Reset supplementary protector CB1 (see Section 5-7) | |
| Auxiliary circuit overheated | Allow unit to cool with fan on (see Section 4-9) |
Fault codes and symptom→remedy steps extracted from this unit’s service/owner documentation; verify against the official manual before servicing.
Available documents
ReferenceService manual
About
Miller Electric XMT 650 — welder. Specifications and parts compiled from manufacturer documents.