How do I replace the central control unit on my washing machine?
Answer Hello Larry. Unplug the unit and remove the top panel off the unit. Now you can access the CCU on the side of the cabinet. Slide the unit down and remove it from the side of the cabinet. Unplug the wires from the old one and install them onto the new part so you do not mix them up. Then install the new CCU into the cabinet of the washer.
My Duet washer would not start in any mode. It had lights for all modes but never would start in any of them. I unplugged unit, plugged it back in and no lights at all, just 3 beeps after hitting power button but no more lite up modes, nothing. I did notice an error code of F70 at one point. I ran the diagnostic test with an 888, c00, u01, u00,c00,n00, then all yellow lights on left side stayed on, then c00 remained on. No F codes at all.
Still would only make 3 beeps when trying to power up.
I installed the new 2 user interface boards with same results. After reading on other websites, I disconnected the 3 blue wire connection going to the lower MCU board, left it off, hit power and at least the modes light up correctly but indicator light is blinking. Should I replace the MCU board?
With seeing an F70 code, this would represent a central control unit heartbeat failure. The would be a communication issue between the user interface and the central control unit. With the issue the issue that you have it sounds like it would be the central control unit that is the issue not the motor control unit.