PowerPro 205SI AC TIG pre-flow not coming on

[christian]

Gee,

It may be possible that you're just reinitiating a subsequent arc start while the post flow is still going, so you're not hearing any newly initiated pre-flow starting, i.e. if your post-flow is at 20 sec, turn it down to about 5 sec.

I usually only set for about .5 sec of pre-flow, if at all.