I'll clean the filter next time I do a drum clean. I've done 1 drum clean already and it does the calibration tumbles at the start even though the display doesn't indicate that its calibrating - they may be some sense to what Samsung are saying. Page 41 of the manual states only the Cotton and Cotton Eco programs use load sensing to reduce the wash time. I've tried Synthetics, Denim, Baby Wash, Bedding and Daily Wash and none of these programs have finished early (but they are for smaller loads). Maybe the cotton loads I've put in have been half loads and only lightly soiled so the machine is working correctly, but I just don't like it knocking 2 hours off. What is good about the machine is the amount of flexibility with the options. I'm not proposing it as a solution but I've found the Baby Wash at 40 degrees with 3 rinses takes 2 hours 15 minutes, so I'm just using that program for now.
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