Lauri, mom of 9:
Your washer is saying -- HELP, I am so tired!! :) Just kidding.
I have a Neptune washer also. I was surprised to see that you said it was quiet at the beginning. Mine has never been quiet! It is quite loud. When I had problems(needed the computer board replaced), my local friendly Maytag repairman told me it was normal. Do you have a service contract on it? Did you send in the warranty info on it when you bought it? Pull out the paperwork if you have it and call them. They are pretty good about answering questions. If you don't have any info, go to
Maytag and search the site on Q&A page to see if they address the issue. If they don't call them. Most of those machines are covered parts and labor for the first five years you own it, although my guy told me that they are changing the rules now. Find out what you are covered for and who services the machines in your area.
In the meantime, while you are doing that, over the course of the next few days, someone here may know exactly what the problem is and answer your question. The problem is, it is hit or miss on when the true experts check the site and can find the time to answer questions.
Hope this helped a bit. Good luck!