My cabrio wtw6200sw2 has F50 code and won't spin I can't seem to find out what the code means. Could it be the motor coupler or controller board?

The F50 code for the Whirlpool Cabrio is most commonly a Motor Control Board failure.

Motor Stalled
F then 50 flashes when the motor rotor position sensor (RPS) senses no rotation.
? Does basket turn freely? If not, make sure bottom shipping pack has been removed. Determine cause of friction.
? If basket turns freely, see TEST #3, page 4 of the Diagnostics and Repair manual.

The Diagnostics and Repair manual can be downloaded as a PDF document file here:
http://www.mediafire.com/?np4yufblj33c0xm

DIAGNOSTIC TESTS
There are three diagnostic test modes available: Automatic, Manual and Console. These tests allow the factory or service personnel to test and verify all inputs to the machine/motor control. You may want to allow the automatic test cycle to complete prior to going into specific troubleshooting tests.

ACTIVATION OF AUTOMATIC DIAGNOSTIC TEST MODE

1. Be sure the washer is in standby mode (plugged in with all indicators off; or with only the Clothes Clean or Done indicator on).
2. Select any one button (except POWER, START, STOP and PAUSE/CANCEL) and follow the steps below, using the same button (remember the button):
   

• Press/hold 3 seconds.
• Release for 3 seconds.
• Press/hold 3 seconds.
• Release for 3 seconds.
• Press/hold 3 seconds.
• If this test mode has been entered successfully, all indicators on the console are illuminated for 5 seconds with 88 showing in the Estimated Time Remaining two-digit display.
• If indicators do not display as described above, the press/hold/release procedure above may not have been performed within the time frame necessary for successful entry. Repeat step 2 to ensure this was not the cause.
• If still unsuccessful, see Diagnostic: Unsuccessful Entry.
  

1. The program then checks for saved fault codes: