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error Miller
Error Code Fault LED
Indicates a system fault condition.
? What Causes This
Various operational failures or issues that exceed normal operating parameters.
✓ How to Fix It
1. Acknowledge the fault and continue operation, or terminate operation to correct the issue as described on the LCD screen.
Source: page 45 of the official manual
From the manual
This error code appears in:
Miller ProHeat 35 Industrial Heater