This is a real-life example of how to diagnose and repair a Maytag F20 error code on a commercial washer. Specifically, it is Maytag model number MAH22PDAWW0.
When you have rental property, you are most profitable if you can do a few maintenance tasks yourself. In this instance, the tenants texted me that the washer in the common area was not working.
Here is how I fixed the Maytag F20 Error Code.