SOURCE: Whirlpool Duet Sport ~ E28 Error Code
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)
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