Sounds like your valve actuator has died. If it's a Jandy actuator.....it should have a 3 position dip switch......on1.....off....on2. If the motor doesn't turn the valve when you switch the dip switch.....chances are the actuator is bad. It also sounds like the valve is set to draw all the water from the spa and and the return valve actuator is set to return the water to the pool.....causing the spa to drain. If it's a Jandy actuator.....you should be able to remove the thumb screw on top of the actuator that holds on the handle......then remove the 4 screws with a #3 phillips screwdriver. Then you should be able to lift off the actuator.....then set the handle back onto the stem....it will only go on the stem one way....then you should be able to manually turn the valve. If you don't feel comfortable doing all of this....call your local pool company. If you could post a pic of the valve before doing anything....that would help. Hope this helps.