[tvopal]

My dynasty welder is having problems on thin gauge material. The arc is jumping in and out. Anything lighter than 16ga, when trying to hold a steady voltage the heat comes and goes making it difficult to make a nice looking weld. Heavier materials with more heat there is no issue. I originally thought it was the foot pedal, although after swapping with another machine the problem still exists. Any suggestions?

[Oscar]

I suggest you disclose many many more details besides material thicknesses. All welding parameters are important.

[Poland308]

Try running it as scratch start without any pedal on low amps. If you can keep a steady arc gap but there are still fluctuations it's likely the machine.

[soutthpaw]

If that machine uses points to start the HF arc, they might need cleaning or adjustment. This can manifest itself as unstable arc on low current. I actually had this issue on another brand of inverter machine, points adjustments fixed it.

Sent from mobile. Not responsible for Typos

[AFR_Autoworks]

I have had this issue before. My first thought is to go into the hidden menus and adjust arc start amperage. It is probably set too high. Give that a shot and see if it helps