Whirlpool washer errors can appear in one of two ways. If the washer has an LCD screen, the error code will flash on the screen. Washers without LCD screens display errors through a series of blinking lights.
On the LCD, look for the letter "F" followed by a coded number. This means that "Fault #" has occurred, and a list of the codes appears in the washer manual. Blinking lights will arrange in a particular order to represent other error codes. Refer to your manual to find the exact error code.
The codes stand for multiple things. Simple errors like "F22" and "F26" stand for door locks and can be fixed with simple adjustments. "F5," "F20" and "F21" are water connection errors and are usually fixed at the source of the valve. Other errors like "F31," "F32" and "F33" are more serious malfunctions and usually require new parts.
Use your manual to guide you through basic troubleshooting solutions. The fault code list from Assured Parts also provides basic directions for each specific error. If the error persists, contact Whirlpool customer service for more information.