Rust stains appeared all over the outside of the stainless steel front of over, air outlet and splash back. What would have caused this and how can we fix this problem?

If it is surface rust, paint it with a rust neutraliser and preventative product. If the rust is deep and flaky, replace the part. If it is the outer drum, it is probably an uneconomical repair.

With top loaders, greasy stains are always from just below the central agitator where the clutch and gearbox are. They use a lot of water pump grease. Older machines have an enamelled outer drum and inner drum. Newer model have a plastic outer drum and a stainless steel inner drum.

The fact that is is a stainless steel container makes it highly unlikely that it is rust. You should never drink out of a rust container. I would suggest a highly caustic but non-toxic cleaning agent. I'd start with vinegar or lemon juice. If you can get your hand in there, let it sit for a while and give it a scrub. Steel wool would definitely get the nasty stuff off but may also compromise any type of protective coating so inspect the metal to see if it has any type of coating over it (like an enamel glaze) should be bare stainless though.

Stainless steel does not stain, corrode, or rust as easily as ordinary steel (it stains less), but it is not stain-proof. There are different grades and surface finishes of stainless steel to suit the environment to which the material will be subjected in its lifetime. Stainless steel is 100% recyclable and is available in different forms, a stainless steel often used in knives pots and kitchen accessories.

For my Frigidaire manufactured Kenmore dryer, the stainless steel drum is part ordinary painted steel (front flange). That flange is part of the suspension for the drum. The flange rides on a nylon wear pad above the door. On both sides of the pad, there is a felt that is glued to the dryer front panel to act as a seal. What happens is that the paint on the ordinary steel flange rubs through and rusts, staining clothes during the drying cycle. I have to replace the nylon pad and felts every few years to combat the rusting issue. The felt and nylong pad assembly is glued to the cabinet flange using heat resistant adhesive.

Stainless steel should not rust, and if it corrodes it does not show the normal red rust colour. Hopefully your surface is not steel plated to represent stainless steel. If it is stainless steel it would be something that has stained it and this can be removed with any quality commercial mild abrasive cleaned and Scotchbrite or a patent soft fine polishing block available at most large hardware od department stores.

Use DeBruce Polish, we use DeBruce Polish on all of our stainless steel. DeBruce Polish will remove the rust and pacify the surface. DeBruce Polish also works on glass cook tops. We get DeBruce Polish at debrucepolish.com.

The bolts used in installation may not be stainless steel also if you see rust stains along with moisture you may be in need of a new wax ring seal which will give the opportunity to install stainless bolts and kill 2 birds with one stone so to speak.

You say your new oven...and DW have stains...I will assume (if that's OK) that you have a stainless steel oven...and are washing stainless steel in the DW...but you are having streaks and or white...spots or deposits...Sounds like hard water...you may try a localized..(just for the DW and kitchen sink area) filtration system...to reduce hardness of water...(is this well water)..if so you definitely need filtration...if you don't already have it.
Here are some issues and or cleaning techniques for stainless steel.

stainless steel is known for its ability to be a clean surface that resists corrosion and rust. Dirt, dust and grime, however, put stainless steel at risk for corrosion and rust. Luckily, stainless steel responds well to cleaning, never wearing out from excessive cleaning, as long as certain rules are followed. 1. Water and a cloth.
Routine cleaning can be accomplished by using warm water and a cloth. This is the least risky option For cleaning stainless steel. Dry with a towel or cloth to prevent water spots. Wipe in the directions of the polish lines.
2. Mild detergent, (dish washing liquid) and cloth.
For cleaning that needs more power, mild detergent and warm water can do a great job without damaging the stainless steel. Make sure you rinse the surface thoroughly to prevent staining and spotting. Towel dry to prevent water spots which can be caused by minerals in water.
3. Glass cleaner for fingerprints.
Fingerprints are one of the biggest complaints about stainless steel, but can be taken care by using glass cleaner or household ammonia. Rinse thoroughly and towel dry. There are some newer types of finishes for stainless steel that resist fingerprints, a must if your pint-sized helpers leave their mark on your stainless steel appliances.
4. stainless steel Cleaner.
If you’ve had staining or scratching, or need to polish your stainless steel, a stainless steel cleaner may be a good option. Some of these cleaners and polishes can help minimize scratching and remove stains. They also can polish stainless steel surfaces nicely. Read the directions on the stainless steel cleaner and test in an inconspicuous spot. Be sure to rinse thoroughly and towel dry.

If this does not help please clarify...with specific model #'s and walk me through (step by step) what the specific problem is and how you address it....Thank you and I hope this helps.............
Good Luck...........The Fang.

True stainless steel will not rust, but it can get rust stained, which could be removed. Without any further info about your situation, I'd have to guess that you have a high iron content in your water supply, and thus rust issues with your sinks, etc., unless you have a good iron reducing softener and the water to the refrig is not running through that softener. Again, without further info, I'm guessing the rust issue is at or below the water dispenser area. Keeping the water from spilling over the drip tray will help. You might try Wink rust remover, but do test it on an inconspicuous area first to make sure it will not adversely affect the finish in a visible area.

Jenn Air makes great products, don't blame them. Your type of stainless steel is a consumer grade that has less nickel-chromium in the mix making it affordable to the consumer. The surface needs to be "pacified", DeBruce Polish will REMOVE THE RUST and PACIFY the surface. We get Debruce Polish at debrucepolish.com.