5d is: suds lock (overdose of detergent dectected during the wash cycle).
Chances are you just put too much detergent in, or maybe the wrong detergent - make sure you're using the HE detergent.
These codes and more details are printed on the service technician diagnostic manual that is affixed to the inside of the washer's front panel.
Unplug your washer, and unscrew the three 1/4" socket screws at the bottom of the washer. The manual should be taped to the back of the panel, and the code and some recommended procedures will be right inside.
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Aug 6, 2013 - Uploaded by Mariela Gonzalez-Aroche
Steps in this video may be used to repair both F21 and 5D error codes. ... which is located on the bottom right corner of thewasher machine.
Based on your post I understand you have a "SD" error problem (looks like a 5D in the digital display) with a Whirlpool Duet washer, the error means an excessive drain time or excessive suds was detected as you may or may not already know.
If you follow the link to my solution to this error designed specifically for "do-it-yourselfers" you should be fixed up in no time. (It's much quicker for me than pasting or retyping the complete solution several hundred times, that's how common this is)
It means Suds Lock(Overdose of Detergent Detected During The Wash Cycle).If suds are detected continuously by the pressure switch during the drain or spin phases,the washer will fill 4 litres of water and during 5 minutes the unit will rest without tumbling,the water will be drained and it will try to spin or drain again.
If too much detergent was used: – Run the unit through a Rinse/Spin cycle. – Run a Normal cycle without adding any detergent. This should clear the unit of the excess detergent. 1. Check the drain hose and make sure it is not plugged or kinked. 2. Unplug washer or disconnect power. 3. Check wire harness connections to the drain pump,pressure switch and Central Control Unit(CCU). 4. Check/clean drain pump filter of foreign objects. 5. Plug in washer or reconnect power. 6. Check drain pump. 7. Check the pressure switch. 8. Verify CCU operation by running a Diagnostic Test.
serial communication error between central control and motor control. Check connections at ccu (top front right corner) and mcu (bottom by motor), check belt drive for wear. Did motor run ? Any other codes in diagnostic? (any one modifier button 4 sec on 4 secs off 5 times.) F codes are failures and C codes are portions of test cycle(automaticly run)
if this is really the old 9150 version then f21 is a ccu communication error with user interface. likely ccu is bad. 5d is not a error code. bearings will make noise when out. unplug wait 1 min the reconnect power. If this doesnt work open top cover and check connections on ccu in rear. (unplug and replug). then buy new control. if your machine is newer duet (wfwxxxx) then f21 is different. (pressure sw) tech sheet on bottom front cover.