2748.328 Town Square 5' x 42" Air Bath Tub Won't Work

If your air blower does not run for more than about 3 minutes then you may have a bad motor.
Once it shuts down it should come back on in about 10 minutes after it cools down.
Every motor has a thermal protection built into it to prevent the motor from burning up.
If this is the situation then you will need a new motor.

Rod
US Parts Center

is there voltage going to the motor?
Rod
US Parts Center

The air button on your tub may be bad and not sending enough air to the air switch located on the bath pump.
The way to check this is to remove the bath pump and see if you can turn the bath pump on by taking a large straw and blowing into the air switch on the bath pump to see if you can get the bath pump to turn on.
If the bath pump comes on then you know you have a bad air button.
If you cannot get the bath pump to turn on then remove the air switch and plug the two wires going to the air switch together and then plugging the pump into a power outlet you know has power.
If the bath pump comes on then you know you need a new air switch in the motor.
If the motor does not come on then you need a new bath pump.


Rod
US Parts Center
888-521-6183

you have a bad motor - when a motor overheats there is a sensor inside the motor that will shut if down so as to not damage the windings and such. once your tub has cooled down for 10 mins or so it will turn back on. the fact that you can push the button multiple times just means that you are turning the air switch on the back of the motor on/off until you get to the point where the motor has cooled down and will turn back on. if you do not push the air button after the tub shuts down and you finish your bath then when the pump cools down it will come back on because the air switch in the motor is latching i.e. it is either on or off. Since you left it in the on position the motor will come back on once the motor has cooled down.

look on the back of the motor there should be a shaft that you can try to turn to spin free because something inside the pump is blocking it. rate me if this is helpful.

sounds like the circuit board in your system is faulty

Sounds like a bad heating element. This is located in a stainless steel tube under or around the main control box behind the cover around the tub. It is not hard to replace but should be done by a pro. The part is avaliable online.

May I get the make and model # to help you more

Check the air vacuum switch and line as you may have a air vacuum leak. The button that controls the on and off to the jets is an air vacuum switch....It may have a slow air leak in the line or connections that is activating the on and off control

59.88 MINUTES.

Example assume tub is 10 gallons.

10 minutes to fill is 1 gal/minute
10 gallons drain in 12 minutes =10/12=.833 Gal/Minute.

1 Gal/Min - .833 gal/min= .167 gal/min gain in water/min.

10 Gal/.167=59.88 minutes.