With no fuel in the system yet, I cant start the truck. Consequently, trying to run two
ViAir 444c compressors off of a dead battery and charger was a lesson in frustration.
The Ridepro X system runs to compressors to 150 psi before shutting off. To calibrate it goes through 200+ small steps that use air and drain the tanks. This process should be done with the truck running, or on a high output charger, and mine was neither.
I finally had an epiphany and turned one compressor off. With a fully charged battery I was able to complete the calibration process. With that done I could set the 3 presets and finally take control the system.