⚠
warning Miller
Error Code Cup Light On
Torch cup is loose or off.
? What Causes This
Shield cup has loosened or become detached during operation.
✓ How to Fix It
- Stop cutting immediately.
- Tighten the shield cup firmly.
- Power cycle the unit (turn off and back on).
- Verify cup is properly seated before resuming operation.
Source: page 27 of the official manual
From the manual
This error code appears in:
Miller Spectrum 375 Plasma Cutter