American Standard 2771.002.021 Cadet 5' x 36" Bathtub, Bone - Answered Questions & Fixed issues

check for power at plug in if power your vacume switch is probably out replace switch.

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REplace the assembly

There arn't any provisions for ejecting water out of the pumps that i know of. The pipes are installed on the tub so that they will gravity drain back into tub. The pump wouldn't be able to run unless fully submersed in water above the jets, i mean it will but not for long. I would sugest disconnecting elec. to pump until you resolve the issue or else the pump will burn.
-This sounds like some kind of air switch problem. Something is causing the air switch to sense the air pressure excerted through the air hose without the button being pushed. This is the only thing it really could be since the power to the pump goes through this switch. I cant imagine anything else causing this other than a faulty air switch on the pump itself. This would mean the pump would need to be replaced since the air switch is sealed in place at factory. Unless some how, some way, air pressure is increasing in the air hose all by itself, not likely. But check the air hose connections on the pump and the button on the tub, if you can even see it. The hose may be partially attached and any slight movement while partially attached could push air into the switch but thats kind of a long shot. I dont know if a craked or split air hose could cause this to happen but i guess its possible.
-If i had to bet on it i would definatly say the pump switch is defective.
Good luck!.............T.Wood CFE Plumbing

it is not....you will have to cut it...that means you will have to get some hose to add in and a coupler to connect the 2 cut ends back together. There is a glue made by Oatey...called rain-n-shine, that will glue the hose to the pvc.

From the sound of it the pump has seized and the thermal breaker is tripping causing the off and on buzzing sound. The problem could be in the motor or the pump attached to the motor. The easiest way to check this is to pull the pump/motor assembly out and check the rotation of the impeller. The impeller should spin freely with no drag. Most pump/motor assembly have a screw slot in the back under a plug or just open in the middle of the back of the motor. In some cases this test can be done without removing the pump/motor assembly. If the motor and pump do not spin freely, puchase a new pump and motor as one unit..

Is the switch connected to the pump?  I have had a few tubs that I have installed where the air line (the switch operates by air pressure) has become disconnected from the pump.  Just slide it back on and secure with a zip-tie.  There might also be a safety switch on the pump that needs to be pushed or the GFI on the wall outlet has been tripped. 

This could be caused by a faulty relay or switch in the control panel. It is best to have a qualified technician inspect the control panel and replace any faulty components. If the issue persists after replacing the faulty components, then it could be a wiring issue and a qualified electrician should be consulted.

To make the water level higher in the pan, the outlet pipe must be higher.

Adjust the float on the fill valve

Depends how old your toilet is, it may be a calcium build up problem on your little inlet pipe inside your tank, but first check your water shut off valve on left side of your toilet near the wall....It may not be open all the way OR the valve has an issue...

Hey, One thing is that maybe there might be some loose plastic shavings in the fill line. From the Factory? or maybe was inside the water line going to the toilet when you connected the line to toilet. Shut off the water and get some towels and something to catch the water and disconnect it from the toilet and use bowl or what ever to catch the water and slowly turn it on and see if anything comes out. Maybe if it is in the line inside the toilet it might fall out by lightly tapping on the fill line inside the toilet to help it fall out. Just a thought when you said it "Sings" that sounds like trash inside the line going to the filler tube and bowl, hey try it who knows it might work. Okay

Hi, First, carefully remove your tank lid, and place it where it won't break or fall. Look for a four-digit number located on the back of the tank, near the water level mark. This is your tank model number. If the number starts with a two, it is a one-piece toilet. Then....visit this link: https://www.americanstandard-us.com/parts-support/faqs/toilets Good Luck!

water level to low or drain partial clog

More likely the sensor has malfunctioned.

these are called phantom flushes. the water is slowly leaking around flapper or the is a scratch of the flapper seat. I use fluidmaster parts

Toilets wear out from mineral deposits. Fixn may cost more then new. Googl used commodes first

air bound or pump overheating

Water turned off or fill valve bad.

https://www.americanstandard-us.com/-/media/sites/asus/files/product-specs/bulk/specsheet5023100.pdf?la=en