Candy Aquamatic 4kg Tempo : sense load (Part 2)

starting the main cycle, for the first 10-20 minutes the machine will take on water and soak the clothes wet. while doing this it's trying to detect and determine what the load size is. it will sense the load size 3 times before commencing washing. as shown here. it drops at the first stage and goes back up at the 2nd stage.