Jacuzzi nova 532 motor run's but won't stay running

Sound like a bad switch. The contacts are likely corroded or broken.

When you push the air button down it sends a column of air to the air switch located in the motor. When there is not enough air sent by the air button on the top of the tub it will not make the air switch "latch" in the closed position and means you need a new air button.
In your case the air button is sending enough "air" however when the air switch is not "latching" in the closed position that means the air switch is bad and needs to be replaced.
Most air switch's can be replaced with a TBS-310
US Parts Center

So as I understand it, you have pushed the air button and the button stays down and does not return to the top of the button body.
if it is permanently pressed down and will not come up on its own even after leaving it sit for some days then you will need to replace the complete air button.
At that point you can reach inside the body of the button and grab it with whatever you can to pull it up so you can replace the complete button.
The air button body has thread running the complete length of it and has a nut that threads onto the body from the underneath to hold it in place.
You must get to the underside of the tub to unthread the nut off the body in order to remove it.
Once removed you can then reverse the operation and install a new air button.

are you filling tub all the way to intake?

black slime come from not using regularly..fill jacuzzi and pour a cup of dishwasher detergent and turn jacuzzi on for a while..

replace switch

Intake stainer is clogged. Remove cover plate and clean.

Keep giving it a few kicks! When that happens to motors it usually means that it is on its way out, I'd milk it for as long as possible but start thinking about a new pump and motor.

motor for tub does not run checked electric its ok.. is there a reset button and does there have to be water in the tub?

I bought a new house and I have a jacuzzi bathtube . and all the sudden stopped working .. where or how I can locate the pumpe ? the only thing I see is the button to turn it on or off and now it does'nt go on ?!! I checked the circute praker and everything seems okay to me.... help please.