The PUMP 1 FUSE light is on and the pump doesn't work. The control system is a CS6230VDS from Hydro Spa. I assume I should change the fuse but I can't tell where it is. Can anyone help me?

On all spas you need to open the service door to get at the controls and pump. Be sure your power has eebn cut back at the disconnect or panel. Once inside the service door test for power again just to insure your safety. The fuse may be a simple fuse that looks like a black fire cracker about 2.5" long with brass caps on each end, pull it and check for continuity.