Getting an error code (F11 -- Serial Communication Error).
Can't recall how long we've had this washer.
I remember installing it but can't recall the year. Maybe about 10 to 15 years?
There appears to be two computers in the washer; Central Control Unit (CCU) and the Motor Control Unit (MCU).
The CCU is located at the top of the machine towards the back.
The MCU is located at the bottom near the left front.
Getting to the CCU is extremely difficult with the setup that we have (narrow pocket that the washer/dryer sits in, with a wall and a built in cabinet on either side; plus it's in a side door entry area that's so small that there's no place to put the dryer, even if you got it down...). Would have to remove the dryer, which is a huge task It was a huge task to lift it up to this position while making the vent, gas & electrical connections.
Checking online, there's some suggestions to check the wiring connection at both the CCU and MCU.
I can check the MCU...
There's three T15 Torx screws holding the bottom access panel in place.
These turned out to be easy to remove, although they're basically down on the floor so you have to lay down while removing them...
With the cover removed, you can see the MCU (white plastic box) on the left...
There's a living hinged plastic cover over the wiring connections.
You just need to use your hands to release the plastic retaining tabs to open the lid.
You can see the for small plastic tabs on the plastic lid over the wiring connectors. It takes some force to release these tabs but not too difficult.
The MCU is mounted to the steel chassis/floor of the washer with four plastic feet that engage a hole in the sheetmetal then slide over to a locked position.
The picture below is how I found it when I opened the access cover.
The "locking tab" on the left (red arrow) is not engaged.
The foot on the rear of the unit (right arrow) is loose and is actually coming out of the hole.
Slightly better picture showing the condition described in the previous picture...
The whole unit should be located about 10 mm towards the right in this picture, when it's properly positioned.
The MCU plastic housing has a clip on the bottom right to guide a single wire and a zip=tie clip in the middle to hold the wiring harness with the black and green wires.
Behind the cover, there are four connectors.
This is the bottom "communication" wires connector (from the CCU).
In the process of disconnecting the communication connector, the outer locking housing broke apart (very thin and brittle plastic).
The unit has this part label.
Looking online, it appears that the Whirlpool service part # is W10756692.
In the process of removing the MCU, the plastic tab for locking the feet in place fell off. It was just hanging on by a thread (took almost no force for it to fall off).
My guess is that the MCU has been loose for a while.
During that time, the MCU has been vibrating/bouncing around and this tab became weakened.
The other guess is that the MCU may have become damaged from being loose...
I cut the wire harness zip-tie to get the wire harness off.
I used a new zip-tie going into the old zip-tie.
It's exactly the same size so it works!
These are the four slots for the MCU to mount.
Goes in then slides over...
Don't see any obvious signs of damage on the circuit board...
There's a fuse on the right side of this picture.
It doesn't seem to come out so I'm not sure how you're supposed to replace it...
Made in Philippines...
The communication connection
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