I have an old Jandy JI2000 system from 1993. Our spa is not blowing out bubbles and I'm not sure how to make them come out with more force. Also, I am wondering which setting the valves should be on. there are 2 JVA2440 valves on above and one below. How should the valves be set?

The air blower on you equipment would supply air bubbles to yoor spa which when active sounds like a big vacuum

unplug all aux wires put one on at a time until it blows fuse then check that aux might be bad pump or bad wire

when new one gets there it should work make sure if old one is 800 meghts so is new if not need a new antenna with it new ones are 900 mghrts

Check your heater by-pass valve and be sure it is almost closed. If not that then it will be your internal by-pass. These will force water through heater and keep it from overheating the water inside it and shuting it down. Also check to be sure the baskets are clean and the filter is clean.

check the breaker that is marked rs in jandy service panel first.Then check the red terminal bar in the upper left corner of service panel. It may be unplugged or have loose or broken wires.then check the red terminal bar on the inside remote

You opened the air valve??? Usually a round thingy on the edge of the tub.

I cant imagine how this would not work if it were open ... it works on the same idea as a carb on any gas engine. If the hole is open, the water stream will **** in air.

must replace water tem sensor

Check the pump make sure that it is getting power. If there is power to the pump and nothing is working then pump is bad. Also this could be your computer board is bad, a inline fuse. or the Jandy is bad