I have a Jacuzzi tub and the vacuum switch will not turn the tub off. I had to turn the breaker off.

Contact the Dealer and seek qualified tech service. Risk of electric shock/***** You should not take the risk but have a QUALIFIED SERVICEPERSON perform the work.

You will need to have a technician from the store you purchased it from install a new switch.

To be up to code, you should have a GFI for your Jacuzzi to plug into and a GFI circuit breaker dedicated only for your Jacuzzi. I

If you already have it, that's great, but if not check with an electrician for installation.

Regards

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Sounds like you may not have a ground on the motor of the pump or a grounded outlet?
check the wiring on the motor on the cord to make sure there are no wires improperly attached inside the motor housing.

have you tried reseting the gfi

Run an extension cord from another gfci and see if it works. If so, you could have a faulty gfci or issues internally to the motor. Also, if the "home run" for the tub is wired into a sub-panel and the grounds and neutrals are not isolated it could cause problems with a gfci as well.
Hope this helps!
Mike

Your Jacuzzi should be connected to a large GFI breaker. If it pops as soon as you turn something on, there is an imbalance between the legs supplying the power to your device. When my (small "J") jacuzzi (at about age 15) did this, I discovered a small leak that had dripped onto the circuit board and had left a deposit causing a "short". I was able to clean the deposit off of the board physically, I fixed the leak and return my tub to service.

The GFI is very sensitive and for good reason. It protects you from dangerous electric voltages, even though the danger is low.

want switch on WHAT? need more details, type of switch is it digital, air or vacuum ETC.. switch to light ,switch to jets or switch to jet flow????????? Its there a wall switch on wall of bath room or gfi breaker for tub?????

The light is supposed to be on when the tub is full of water and the pump comes on. Make sure the heater is plugged into a seperate breaker, it cannot be on the same line as the pump.
Look on the heater for a label. If your heater is installed on the discharge side of the pump it should say "pressure heater" on it. If it is installed in front of the pump it should say "Vacuum Heater" on it.
Once installed, fill the tub with water and turn the pump on. If it is installed in the correct position the light will come on when the pump turns on.

I would check all power to the tub. Is it plugged straight to a breaker, plugged into a GFCI, GFCI breaker in the master panel? For it to just stop altogether I would think something tripped.