Hello! I started using a new Octo Elite 200-S, but it kept shutting off after running a few seconds no matter what setting it was on. I sent it to Coralvue for replacement, they responded nothing was wrong with it, and sent it back. In the meantime, I started using a new Octo Regal 150-INT in its place. I could never turn it up past low because it would do the same thing, shut off after a couple seconds, but I kept using it because the low setting combined with my Red Sea matt roller seemed to be working okay. Now the Regal is doing the same thing, no matter what setting, it shuts off. I've tried both Varios controllers, made sure my connections are secure, pumps are clean and all that jazz, but to no avail. What is causing this???