Jacuzzi H546 won't stay on unless you press button continually

replace switch

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

I assume you hooked the hose back up to the air switch on the motor.
There will only be a couple of things to check.
Make sure you have a good connection with the air hose to the air switch on the motor. Sounds like maybe the air switch may be bad.
The Air Switch is a latching air switch so if is broken then it won't latch when the air button is pushed.

Rod
www.uspartscenter.com

Try compressed air through the system,careful not to use too much pressure. Also you may use another water pump to push water through system and free up the motor. The easiest thing may be to get a new motor though.

Hi Melissa,

I'm sorry to hear you're having difficulties with your DC17. If the on/off switch doesn't seem to be working correctly, it's best if you get in touch with us directly so we can help. You can call us free on 1866MYDYSON, or email [email protected]. We'll look forward to hearing from you.

Kind regards,

Jack
Dyson Online Customer Support

Hi there,

Sorry to hear you're having difficulties with your DC27. In case you haven't already tried this, make sure you press down firmly on the power switch when turning the cleaner on. If the switch still won't stay down, it's probably best if you get in touch with us directly. One of our experts will be happy to run through some troubleshooting over the phone with you, and recommend the best course of action. You can call us free on 08002980298 (UK), or 1866MYDYSON (US). We'll look forward to hearing from you.

Kind regards,

Jack
Dyson Online Customer Support

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.

the buttons on most of the tubes are pressurized air when u push it sounds like a bad button or hose it could even be the little air sylenoid that clicks on and of when the air is forced against it when u press the button 1st check the hoses for leaks 2nd remove hose and verify the button works

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.