Returning my nomad

I just got my Nomad from Pyramid and unfortunately the unit will not go beyond 1500 psi. At 1500 the unit would shut off and an "L" would display on the LCD screen. I contacted AV directly and they informed me the "L" on the readout ment low voltage and I should try a different outlet. I've used several outlets without the use of any extension cord and the unit will still have the same outcome. I've even tried using it directly from my vehicles 12v battery and that didn't seem to help. If anyone here has any ideas I can do to fix this instead of getting a refund? Thanks
 
Well, I got lucky—or so I hope—found a Nomad on eBay and the compressor ought to show up any day.

Am new to this pcp air gun stuff, so have quite a learning curve to tackle. The last thing I need is equipment that fails right off the box, so am hoping the Nomad performs as have seen on videos.

As for a rifle...opted to buy a Gaunlet, fully modded by Mr. Hajimoto himself, so I know it will perform splendidly; have absolute confidence it will be a top-notch instrument! This gentleman is a genius!

The rifle should arrive not long after the compressor, so will give me time to familiarize myself with its operation, as well as what other equipment will be required...