Maytag MHW5630HW2 - Stalling mid-cycle

[Zachezen]

Hey all, 

HVAC tech here, usually I can troubleshoot stuff like this but I'm super stumped at the moment. 

I have a Maytag washer (Model MHW5630HW2) that will stall mid-cycle sometimes. 

The only three modes we use on a regular basis are the "Quick Wash" (most commonly used), "Normal Wash", and "Clean Washer".

When we run Quick Wash, most of the time it will run just fine, sometimes it'll freeze/stall part-way through the cycle and the only way to fix is flip the breaker off-on then it'll do a quick drain cycle & then unlock the door. 

If we run the "Clean Washer" cycle, the timer stalls around 1:20 and then doesn't move at all. It does this every time we try this cycle. 

I've never noticed the Normal Wash cycle do this, however I don't use it often so not sure if it stalls on that as well. 

There are no error codes or other indication of issues with the washer beside this. However, if we've noticed it's stalled, and then we press any button on the HMI, it'll show "PF". 

I've tried the following repairs to no avail: 

- Changing HMI and ACU (original HMI had a large scratch through the buttons)

- Changing Water Fill Sensor 

- Verified all wiring is secure and no broken/stripped wire insulation

- Cleaned water valve inlet filters 

One thing to note is that the new ACUs LED blinks really fast when power is applied, then slows to a slow flash. The tech manual I found says that if this happens, the ACU is bad - but I find that hard to believe as it's brand new :( 

Short of buying a new washer, what else could be the issue? What am I missing? 

Any help would be very much appreciated :) 

[dfphoto]

broken wire lid lock error or board because you have a lot of DC voltage sensors and such

Check every wire apply voltage to see continuity can give errors when voltage is applied... try diagnostic mode because if you cannot get into it that means you need a board.

Edited Monday at 08:01 AM by dfphoto