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