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Common VFD, drive, UPS, and cabinet overheating failure point.
Hypertherm Powermax 45 Fault Codes — What They Mean
The Hypertherm Powermax 45 (and 45 XP) is one of the most widely used plasma cutters in fabrication shops and field service. It uses a fault code system displayed on the front panel LED to indicate problems. Fault codes appear as two-part numbers (e.g., 0-30, 0-50, 0-70).
| Code | Meaning |
|---|---|
| 0-30 | Shield missing or consumable fault |
| 0-50 | No arc transfer |
| 0-70 | DC bus undervoltage |
| 0-10 | Overcurrent |
| 0-20 | Input phase loss (three-phase units) |
Most Common Powermax 45 Fault Codes and Fixes
0-30 — Consumable / Shield Fault
Most common Powermax fault. Power off and inspect the torch — missing shield, damaged nozzle, worn electrode, or wrong consumable part numbers for the amperage setting. Reassemble carefully. Hand-tighten the shield cup only.
0-50 — No Arc Transfer
The pilot arc fired but didn’t transfer to the workpiece. Causes: work clamp not on the workpiece (clamp on the table, not the part), gap too large (torch too far from metal), or severely worn consumables.
0-70 — DC Bus Undervoltage
Input voltage too low. Check supply voltage at the machine under load. Eliminate extension cords. On generator power, verify the generator regulation is stable.
0-10 — Overcurrent
Torch directly shorted to workpiece or consumables arc-through on thick material. Clear any short and inspect consumables.
Parts Often Needed
| Part | Notes |
|---|---|
| Electrode | Replace when pit depth exceeds 1/16” |
| Nozzle | Replace when orifice is eroded |
| Shield cup | Replace if cracked or threads are damaged |
| Work clamp / lead | Replace if damaged |
Need Replacement Parts?
Before ordering, match the replacement part to the model number, electrical rating, and failure symptom. Check current prices on Amazon - prices and availability change frequently.
When to Call a Pro
0-70 or 0-10 faults that persist with correct input voltage and new consumables indicate an internal power supply fault. Hypertherm authorized service handles internal component repair.