OK, Thanks for that.
It looks like the carbon brushes are worn out and will need replacement.
Looking at the age of appliance and from what you have described, it cant be the control board as it works perfectly fine on other cycles.
Moreover, the problem is intermittent and will likely increase with time.
As the appliance is used more frequently the brushes will need replacement.
You can CLICK HERE to order part and also check the Video which will give you an idea on how its replaced.
You may unplug it and check before replacement.
If the brushes appear fine then I am afraid you will have to replace drive module.
Let me know how it goes.
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