Maytag Centennial Washer Diagnostic Mode & Tests

Technology is evolving. Appliances now come with electronic controls that provide troubleshooting benefits. These benefits aid your troubleshooting journey so you can fix your machine quickly.

If your Maytag Centennial Washer stops working or malfunctions, and you can’t figure out the exact problem, the diagnostic mode can help you do that.

It makes it easier to identify and fix errors related to your unit. This article will explain the diagnostic mode and how to use it to aid your machine troubleshooting journey.

The goal is to assist you in running quick troubleshooting independently so you won’t need to consult a technician for a simple problem.

maytag centennial diagnostic mode

Maytag Centennial Washer Diagnostic Mode

The diagnostic mode on your Maytag Centennial washer is a self-test mode that can help you troubleshoot problems quickly. When your machine gets into trouble, you don’t need to start manually checking all the components to determine the cause of the problem. The diagnostic mode will help you identify the problem source quicker with no risk of fixing the wrong parts.

It troubleshoots the machine issues by viewing the logged washer errors and performing a self-test in automatic or manual mode to discover more faults. It then reset the washing machine to enable it clear error codes and fix itself.


It runs a series of tests on the critical components of the washer where primary operations depend so it can identify if they are working correctly. If it encounters a problem, it returns an error code to notify the user. For machines without a display, it flashes status lights on the console to signify an error. You’ll need to interpret the error through the sequence of flashes and fix the problem accordingly.


So, if your washer stops working or you notice a problem, the diagnostic node should be your go-to troubleshooting guide to fix the problem. Now let’s discuss how you can use the diagnostic mode.

Maytag Centennial Diagnostic Mode: How To Enter

You can enter the diagnostic mode on your Maytag Centennial Washer independently without the help of a technician. It’s a simple process, irrespective of the model you use. You can select between an automatic or manual self-test.  Follow the procedure below to put your washer in diagnostic mode:

  • Switch your washer off but keep it in standby mode. It means the washer will be plugged in, but all indicator lights will be off
  • Check the position of the central knob. Depending on the position, rotate it counter-clockwise till it turns to the 12 o ‘ clock position.
  • When it’s in a 12 o ‘clock position, rotate it clockwise three clicks( turns) with a seconds space between the turns
  • Now rotate the knob one-click counter clockwise(left one click)
  • Finally, turn the central knob to the right one more time (clockwise) with one click.

This process will put your washer in diagnostic mode. You can confirm this when all the indicator lights flash. If the process doesn’t work, return the knob to the 12 o’clock position and repeat the steps above, ensuring the time between each click or turn doesn’t exceed a second.

When your washer enters the diagnostic mode, you can choose between the following options:

  • Enable an automatic or manual diagnostic test to inspect the system for hidden faults
  • Check the recent/stored error codes
  • Reset the washing machine to clear error codes and fix some problems.

Typically, the best choice is to clear the error codes. You can remove error codes on your Maytag Centennial washer as follows:

  • Locate the central knob and turn it clockwise until all the LED lights are off except the “done” light
  • Press the Start button and wait for the machine to display the error codes. Ideally, the washer only saves the four most recent error codes

So, if it doesn’t display any codes, it’s probably because there’s no problem with the washer. If it shows any, you’ll need to interpret it, so you understand where to diagnose. If you’re unsure of the interpretation, you can consult your owner’s manual.

Afterward, you can exit the diagnostic mode by pressing the Start button for about three seconds. It will also erase any previously saved error codes.

How To Start The Automatic Diagnostic Mode

The above diagnostic process will let you see the most recent fault error on the machine. So, you can’t determine where the problem lies. You can now run an automatic diagnostic washer cycle with the steps below:

  • Start the diagnostic mode as described above
  • However, this time, turn the central knob to the right until only the Spin indicator light is on.
  • Press the Start button to initiate the self-test mode

The washer will start a quick and overall test to check all the washer functions. If it displays an error code, you can now return to search for new error codes to pinpoint the machine problem.

You can advance between each step by manually pressing the start button.


  • Danny Saunders

    Danny Saunders is a tech enthusiast. He enjoys getting his hands dirty with the features and settings of tech products and pushing them to their limits just to know how to get the best from them and how well they can endure "abuse" without breaking down. He shares his findings on this blog.