Hi @tronke
Here's the [document|32617|tech sheet] for the washer.
Go to p.2 to view the procedure for activating the diagnostic test mode and check if any errors are being shown.
At the bottom right of p.3 there's a Fault/Error Code Display Method chart that shows how to interpret the status lights on the machine to know what the code (if any) is.
p.6 → p.7 give an explanation and possible causes for the error codes.
If you find the problem and it is a faulty part that needs replacing, here's the [https://www.searspartsdirect.com/model/6aazedqe1f-001198/whirlpool-wtw5500bw0-washer-parts|parts list] that is ''useful.''
Search the parts diagrams to locate the wanted part and when you find it you see that the ''manufacturer's part number'' for the part is shown with it.
Then search online for the ''part number only'' to find suppliers that suit you best.
Hopefully a start to find out what's happening.