This is an older model and I need to understand the system control module. Its a Venterra. Jacuzzi dont have the manual (Dave from NJ)

Jacuzzi has some archived manuals at [urlhttp://jacuzzihottubs.reachlocal.net/request-brochure/download-manuals.html][/url]

They also have a phone number you can call if you don't see your model manual listed. I was able to get an owners manual for my 94 Blue Ridge from them (even though my spa is pre-jacuzzi). It was a pretty generic manual, and they charged 5 bucks for it. It doesn't have any schematics, just operating info.