!
error Miller
Error Code Help 34
Indicates a short or open in the thermal protection circuitry located on the right side of the unit.
? What Causes This
Short or open circuit in the thermal protection circuitry on the right side.
✓ How to Fix It
Contact a Factory Authorized Service Agent.
Source: page 75 of the official manual
From the manual
This error code appears in:
Miller Dynasty 350 Welder