⚠
warning Miller
Error Code L09: Output Current Limit
Indicates a limit condition on output current due to operational setup issues.
? What Causes This
Improper insulation alignment or coil adjustments.
✓ How to Fix It
Tighten blanket against pipe surface for better thermal efficiency, align coils more precisely as necessary.
Source: page 47 of the official manual
From the manual
This error code appears in:
Miller ProHeat 35 Industrial Heater