WFW9550WW10 well I change the water outlet thing and now as it does when you hit the button is buzz but it said F70 before it before all this to happen to them when I changed to R Dowd let water outlet now it just as the buzz what is going on

The F70 code means:

If a Central Control Unit Heartbeat Failure is displayed, no communication is detected from the Central Control Unit (CCU) to the User Interface. Possible Causes/Procedure 1. Check for continuity of the User Interface harness. 2. Check wire harness connections to the User Interface and Central Control Unit. 3. If the drum is not rotating, unplug the MCU from the CCU (the MI3 or M13 connector). If the code goes away, then replace the MCU. If the code does not go away, replace the CCU. 4. Replace User Interface if drum is rotating.

The part number for the interface is WPW10428011.

The part number for the central control unit is WPW10424936.