Thanks, Mr. Capone,
I updated elsewhere... I received a code of F30 (restricted airflow), F28 (moisture sensor open) and an F21, which is VERY bizarre. The F21 does not seem to be associated with this unit at all, only Whirlpool washers!
The only error code that seems to be constant is the F30. We've cleared every external source of restriction. The moisture sensor will frequently pass its diagnostics, but this F21?!.... Is it possible that internal airflow will disable the motor?
We'll have to "go in" and confirm that there is nothing blatantly messin' my machine up. Other than avoiding frying ourselves to high heaven, any great words of wisdom or advice?