bethshar
It sounds like you do not have the jumper installed.
Roborph
Your ozonator should make a faint humming or buzzing sound. Â Also, there is a short piece of tubing near the top that should be the air intake. Â If you put your finger over the end, there should be a slight suction. Â There should also be bubbles comming from your circ pump jet at the bottom of your spa. Â Now all of this, of course, does not verify that the unit is actually producing ozone.