Waher machine stops before rinse

Our Sears/Whirlpool washer was showing a F21 code as well. We could eventually get it drained but we could tell it was not doing well as it was making quite a noise. We hired the Sears repair man, he says "I see this all the time - it's a sock stuck in the drain." He takes 3 screws off the panel just below the door on the bottom side of the panel and lifts it off. There is a white cap on the right side that he unscrews by grabbing the cap with a plyers. Important: catch the water as a lot will drain out. Pulls out the sock and some coins and says that will be $150. Hopefully I just saved you that money.

Using the wrong detergent may or may not have had something to do with this error. It is important that you use HE detergent in these washers, though. If you don't, you are in affect adding a higher concentration of detergent in a washer that only uses 5 to 7 gallons of water. Regular detergent is formulated for a wash tub with a 35 gallon capacity. Using it in an HE washer can cause excessive sudsing, premature failure of the drain pump and seals, and annoying error codes.

First, try running a DRAIN/SPIN cycle to clear out any excessive suds. You may have to repeat this process several times. Next, leave the washer unplugged for 30 minutes to see if the Central Control Unit (CCU) will reset and clear the error codes. If the problem continues after a CCU reset check the following:

Check your drain pump for obstructions. The "F21 error is a Long Drain error code. If there's something obstructing the drain pump, the washer will not complete the wash cycle. The following link explains:

http://www.fixya.com/support/r1484065-f21_error_code_whirlpool_duet_kenmore

Also check the drain pump connector plug to ensure it is not loose. If cleaning the pump does not correct the error, you may have a pump that no longer pumps at the correct volume. If this is the case, you need to replace your drain pump.

The "F27" error code is an Overflow Condition. It can have several causes, but the drain pump is the common link with these two error codes. This error can be generated if air is detected in the drain pump (suds), or if the pump is not working.

If you have questions, please let me know. I hope you find this information helpful.