Duet Washer F11 diagnostics
Model Number: GHW9200LW Brand:
5 - 10 years
This is a front-loading Duet. After pushing start, instead of the solid THUNK, it makes a soft 1-sec buzz (stuck relay?, which I don't remember before), followed by water spray sound (normal) then 'F11' within 30 seconds and stops with the door locked. I have to unlock manually by reaching up from the lower panel.
I can't figure out how to run the diagnostics test - after pushing 'prewash option' four times it displays C00 briefly then displays F11.
I tried the communications bus cleanup posted online by samurai appliance (tightening the connections of a 3-wire cable between the logic control board (CCU, top back) and the motor control unit (MCU, lower left front)), no fix.
I suspect the MCU but I'd like to do more diagnostics before replacing parts. What is likely wrong? I am also perfectly capable of replacing components on the MCU if anybody has experience with this problem.