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F71 is no communication detected from the User Interface to the Central Control Unit (CCU). This could simply mean a loose or poor connection between the two communicating boards.
Disconnect power to the washer prior to servicing to avoid the risk of electric shock.
Remove the three screws attaching the top panel to the rear of the washer then slide the panel rearward and lift it off the washer.
Disconnect the User Interface ribbon connector from the left side of the Central Control Unit (CCU) and clean the connector and terminals thoroughly. Reseat the connector several times to ensure a good connection between the Central Control Unit (CCU) and the User Interface.
It is highly recommended to clean and reseat every wiring harness connector from the Central Control Unit (CCU) to prevent the same problem in the near future.
Reconnect every wiring harness to the CCU and make sure all connectors are firmly seated. Slide the top panel back into position and secure it to the rear of the washer with the screws previously removed.
is a communication error between the central control unit and the user
interface. First check the continuity of the user interface harness and then
check the wire harness connections to the user interface and the central
control unit. If the drum rotates then replace the user interface, if the drum
is not moving then replace the central control unit (CCU).Hope
this helps...please post back for further assistance.
F71 error codeUSER INTERFACE HEARTBEAT FAILURE If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the User Interface to the Central Control Unit. Possible Causes/Procedure 1. Check for continuity of the User Interface harness. 2. Check wire harness connections to the User Interface and the Central Control Unit. 3. Replace User Interface if drum is rotating. 4. Replace Central Control Unit if drum is not moving.