Welcome to TFP!!!
There is no electrical diagram that I can find for the spa from 2010 to determine the sensor driving the dry error. As a result, it is not clear what sensor is driving the DRY condition to the controller/control panel.
It may be a sensor or control panel issue.
From the 2009 manual:

As they indicate, for persistent issues, contact the dealer...you don't indicate where you reside in LA. Here are the dealers in LA:
SPLASH POOLS & SPAS
13031 Perkins Rd., Baton Rouge, LA, 70810, US
(225) 766-8800
SPLASH POOLS & SPAS
13031 Perkins Rd., Baton Rouge, LA, 70810, US
(225) 766-8800
AMA DISTRIBUTORS LLC
1525 AIRLINE DR, Metairie, LA, 70001, US
(504) 835-3232
You may also want to contact Artesian for help:
4720 N Lamb Ave, Las Vegas, NV, 89115 | (702) 307-5124
artesianspas.com