Appnut & Powerfin64 - I thought I was crazy! Glad to see that you guys also seem to notice that majority of the downloaded cycles appear to be reskins of the Normal cycle.
That rinse action of spinning while spraying with a tub full of water appears to be what LG refers to as "filtration." After filling up to a certain level, the machine will enter the rinse-filtration motion. Once it completes, it will continue to fill if needed and do 2-4 tumbles prior to final draining/spinning. I have seen it be aborted numerous times if there is too much turbulence.
https://www.lg.com/in/magazine/enjo...-performance-with-lgs-6-motion-dd-technology/
Filtration also exists in the starting stages of the initial fill and saturation for the main wash on ALL cycles, but it's only on the Normal cycle where it does it on the rinse as well.
Other cycles beyond the Normal stick to the tried and true approach of filling and tumbling for rinses. My assumption is that LG may have thought that this filtration method is only effective for a certain load size.
They claim it helps to saturate the load faster and evenly in general.
The Turbowash marketing claims to wash a load in 30 minutes however this is at a specific load weight and a specific cycle being the Normal cycle.
*Based on independent testing comparing models WM3900HBA and WM4370HWA in normal cycle with TurboWash™360° option, 10 lb. load vs. TurboWash® 2.0 option, 8 lb. load (Feb. 2019).*
https://www.lg.com/us/press-release...nder-30-minutes-with-new-turbowash-technology
As the TurboWash spec is based on the Normal cycle, I assume to save time to reach the 30 minute claim, they changed programming in certain spots of the Normal cycle - some of them being the final rinse and the vastly shortened spin cycle. Even on my WM4370HKA which does not have any AI or TurboWash 360, behaves exactly the same as present LG's on the Normal cycle with Turbowash enabled.
The intermittent spin cycle drain prior to entering the final rinse is waived on the Normal cycle (Turbowash enabled), this would technically save time on draining, filling for the final rinse and in addition would help to save water being the Normal cycle which is used to rate the machines efficiency.
Literally every single cycle where an intermittent spin cycle between rinses is present, it will do a burst drain after the machine coasts to a stop before entering ANY rinse (my 2014 Whirlpool Duet WFW72 NEVER did a drain after spinning on any cycle). In fact, if you select an extra rinse on the Normal cycle, it will still do the burst drain prior to entering the first rinse after the first intermittent spin, but still not for the final rinse.
Another place which they cut down on time on the Normal cycle is the final spin. I REALLY don't like how short the final spin is by default on the Normal cycle and i've seen other front loaders which do this as well. Clothes feel as wet as they were as if they came out of an old top loader and the dry time increase is very noticeable. By default for Normal, the machine will hit 1200 RPM (high), and the mere second it reaches that RPM, it will coast down to shut off. The way to circumvent this is to select extra high and it will spin for a longer time at around 7-8 minutes at a higher RPM anywhere from 1100-1260 depending on load balance - similar to other cycles. With the exception of the Bulky and Speed Wash (maybe perm press and delicate, haven't used them), every other cycle does not have this horrendously short spin cycle and actually spins for a good amount of time at a high RPM.
Side note, this is now the second front loader i've owned which on the Normal cycle the spin cycles don't match the speeds. Low, is 1000-ish RPM, medium is 1160 RPM. Other cycles low is 600 RPM and medium is 1000.
The final place which I can tell they cut out is the very final end cycle drain and final tumble. Again, ever other cycle does this except the Normal. On Normal, the machine will coast down unlock and that's the end, no tumbling, no final drain. The same behavior also exists on the Speed Wash cycle which is meant for quick cycle times.