I am facing same thing after 1 successful working day after I replaced the CCU
Hello
Error F31 in your whirlpool duet washer is displayed due to MCU (Motor Control Unit) failure. It is displayed if the heat sink gets too hot and then the MCU stops motor, then MCU sends the signal to CCU (Central control unit). Please check the wire connections between the CCU and MCU, if thats fine then check the motor operation. Hope you understand...replacing the part# that has gone bad is recommended repair. Please get back to me if you have any other questions.
Kevin
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