Most dishwashers work in the same way; the biggest differences between different models are mainly the design or aesthetics. The water enters the machine from the bottom via a water inlet hose. The water is then heated by a heating element inside the dishwasher, which is placed under the spray arms.
Lastly, the water pressure makes the arms spin, which spreads the water around the machine. The dirty water is pumped out, and new water is taken in.
A normal dishwasher without any advanced functions can last up to 15 years, but it’s not uncommon to have to swap it out after ten years. Most issues and faults that occur can usually be fixed. A common issue is that the machine doesn’t fill up with water, which could be caused by a range of things. Apart from a blockage in the hose, a fuse could have blown due to a leakage or maybe the water inlet has been shut off by the tap in the kitchen.
This is a dishwasher that lacks both a top panel, a door, and sometimes also the side panels. These kinds of dishwashers are made to be built into the worktop and will have a door that is made in the same material and colour as the rest of the cabinets in the kitchen. Many people prefer an integrated dishwasher purely for aesthetic reasons. Functionally, there is no difference to a normal dishwasher.