if your pump is surging then you do not have enough water in the bathtub or you have a jet that is blowing air into the suction fitting. this happens a lot when a jet faces the suction and the air control is wide open. the suction pulls in too much air and causes the pump cavitation (surging). Try pointing the jet opposite the suction cover upwards and see if that doesn't solve the problem.
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This usually indicates the pump is seized or has an obstruction in the impeller. The humming sound is from the electric motor, if left on it will trip the circuit breaker
Does that model use an air switch to turn it off and on? You may have a loss of air compression in the switch linkage somewhere. It's not uncommon for those to fail after a few hundred compressions, especially if they were impacted sharply.
I can't tell about your water supply from this posting. Is it possible you have iron or sulfur in your water that only shows up in the hot water? If so, you may not have drained the water heater often enough to prevent problems. Usually, draining it about every 6 months will do it. To drain the water heater, turn off the energy source (electricity or gas), turn off the inlet valve, and connect a water hose to the drain at the bottom of the tank. Open the drain ****. Some don't have handles and require a flat blade screwdriver to open them. Run the drain hose down the driveway so the hot water from the tank doesn't kill your lawn. By the time it reaches the street, it should be cooled off enough not to hurt anything. If it's been a while, you may want to weight down a trash bag at the end of the hose so the water and sediment coming out don't stain your concrete driveway. Let the water from the end of the hose dissipate over the trash bag. It takes about 30 minutes to drain a 40 gallon water heater. It goes faster to carefully open the overflow pop off valve to let air in while it's draining. When it's drained, close off the drain spigot, open the incoming water and when it is quiet again (full), turn the energy back on. You may have to relight the pilot or click the igniter until it flashes one time to let you know it's working. You should have hot water again in about 30 minutes. If the smell in the drain persists, some baking soda and vinegar flush will normally take care of that.
These units sometimes have a GFI outlet behind inside wall under the tub some where or in a closet or even in the bathroom some where-check if you do have one it may need to be reset
It should be easy. You should be able to unscrew the stopper and take it out. The part of the drain that sits inside the tub screws in to the drain under the tub. It takes a special tool to remove it but you can use either two screwdrivers or is the opening is big enough the handle of your pliers and put them in the drain. If you look inside the drain there are two or three braces that go across and that is where you need to put the pliers or screwdriver in to get it to turn out. You can either get a new gasket or some plumbers putty and repair it. I hope that helped.
There is a heating unit somewhere that produces the steam. There should be an access panel somewhere to allow maintenance and repair. It could be in the tub surround or it could be behind a false door under the vanity or it could be in the wall depending on how you bath is laid out. Look for a panel with some screws.
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27 How to replace an in line or flow through heater for an above ground ... I just changed out the water in my spa when I discovered the heater element ... Is there a hose that should fit on it? ... I figure it will run similar to a whirlpool setup. ... tests on the unit...but, it sounds like 1. your sensors may be DC and
Few plumbing issues such as Dripping faucets. Running toilets. Leaky valves. Clogged bathtubs can be solved by our own trying few things.
1)Firstly lookout for what is causing blockage such as soap or hair inside the pipeline blocking water just pull it out from pipes.
2)Secondly use a plunger(Tool used by plumber to clear clog) pour some water in bathtub to cover the plunger block the overflow of water with rag.Place the plunger over drain pull up & down 5 to 6 times.
3)Lastly if still the clog is not cleared try out with snake a long flexible steel cable wound on a handle In a sink you just feed the snake down the drain, but on a bathtub you need to feed the snake down through the overflow plate opening. Start by feeding about 3 feet of the snake into the opening, turning it as you push it forward. You will feel some resistance as you work the snake through the trap under the drain, and the turning helps to move the head through the trap. The snake should either break up the clog by pushing its way through it, or your turning will hook the end of the snake onto the clog and you can pull it out.
After trying with above if still there is plumbing issue call sewer line repair services for help.
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Air Switch Repair
It sounds like you have a bad air switch located in your motor.
The air switch is what the air hose connects to on the back of the motor or on the box on top of the motor. The other end of the air hose is connected to the air button on the lip of the tub.
This is a latching air switch and when you push the air button it latches to send power to the motor. When the air button is pushed again it opens the latch in the air switch and stops power going to the motor shutting it off.
Rod
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