Power supply appears to shut off before completing cycle:
1.) Unplug power supply and check fuse.
2.) Fuse is bad: replace with 2.5-3.15 amp slow blow.
3.) Plug in power supply and turn on without unit being plugged in.
4.) Power supply OK: connect unit and run in pool. Hint: if power supply blows fuse only when unit is connected, there is an electrical short in the unit, so contact nearest service center.
5.) Power supply blows fuse without unit being connected: power supply has a fault contact nearest service center.