Miller Synchrowave 200 first use wont weld?

[grenade inspector]

So last night I finally got around to hooking up my synchrowave 200 that I've had sitting in my garage waiting to unwrap for a couple months. I hooked up the gas, the 220, plugged in the pedal, the torch, and the ground, clamped the ground to a piece of angle iron, set the lever to dc tig, flipped the on switch, set the amps to 170 went to weld and nothing? wtf? I get no gas flow unless I hit the purge and I hear no fan and cant even get and arc between the torch and the ground clamp, what did I miss?

thanks all, hopefully this is some stupid error on my part not being familiar with this machine