This can be a frustrating situation and many people will panic right away and think that they are going to have to call a repair professional to get it fixed. There are things that you can troubleshoot in order to fix the dishwasher yourself, but don’t ever hesitate to call a professional for dishwasher repair if you are not comfortable doing it yourself.
The list that is given here is put in order of the most common to the least common. Remember, most dishwasher work the same, although some may have different features and are different brands. This list will apply to any and all dishwashers out there.
You are going to want to check a couple of things if you notice that it is not getting power or if it is not lighting up. You can check to make sure that the machine is plugged in and that the circuit breaker that corresponds to where the dishwasher is plugged is on. Also, if the outlet the dishwasher is plugged into is a GFI outlet, make sure that the outlet itself has not been tripped.
The door switch also called an interlock switch or a door lock is there to make sure that the machine doesn’t start with the door open. When you close the door, it signals to the motor to begin. If the machine isn’t starting, it is possible that this switch is broken.
It is located in the door panel and it is easy to test. A simple continuity test will let you know if the switch is getting the electricity it needs to work. You will remove the control panel, locate the switch within the panel, and conduct the test.
This fuse is a safety measure that is in place to keep the dishwasher from overheating. If at some point it did overheat, the fuse blew, and the fuse will need to be taken out and a new one will need to be put in. This is another part that is in the control panel and can be checked with a simple continuity test.
The door latch is the actual mechanism that keeps the door shut. This part is, 99% of the time, a simple plastic piece that can break. If this latch breaks, the door is not going to shut properly, and it is not going to trigger the door switch to tell the dishwasher to turn on. You will be able to visually inspect this part to see if it is cracked or completely broken.
This is the last possibility for your dishwasher not turning on after you have checked everything else listed above. The main control board distributes electricity to all of the components within the machine. If everything else has been checked, it is likely that the main control board is bad and will need to be replaced.