It's a mess of a programme. It's designed to wash clothes that can be washed at 40⁰C or 60⁰C, but the machine rarely heats above 35⁰C. It's an eco wash and makes up for the lower temperatures by washing for longer and doing faster tumbles.
For a smaller load, the machine heats to around 20-25⁰C. I'm assuming it's because there's more room for the laundry to move about freely, unlike for a full load. I've used it once and hated it. Rinsing is about as bad as it can get - low levels, slow tumbles. Spinning is the only positive and is basically the Towels final spin but without the speed spray (mine has it, but never helps as it sprays the door glass).
Even on my machine which has the turbidity sensor, it only gets used on the AI Wash/Auto Optimal Wash programme. Maybe Drum Clean too as it never takes the full 2:23 cause I do hot washes often and the machine never gets mouldy. I'm assuming the machine checks for the soil level there too. But that's it. It does, however, mean that if the sensor happens to fail, most programmes can still be used, and considering that the auto wash is heavily based on a Cotton 40⁰C wash, it could be worse tbh.
