!
error Miller
Error Code Pressure Light On
No or low input pressure (below 40 psi / 276 kPa).
? What Causes This
Gas/air supply pressure is insufficient or not connected.
✓ How to Fix It
- Check gas/air supply connection.
- Verify pressure regulator is set to 90-120 psi (621-827 kPa).
- Check for gas leaks.
- Ensure gas cylinder is not empty.
Source: page 27 of the official manual
From the manual
This error code appears in:
Miller Spectrum 375 Plasma Cutter