This wount be a fault on the moisture sensor, what is worth considering is the programme you use on your washing machine as if the program you are using has a spin speed less than a minimum of 1200 spin there is not enough moisture out of the clothes before you put them into dryer, its always worth re spinning your washing before you put them into your dryer as this will save you money on electric, try what I’ve mentioned and I’m sure you will find everything will work well Kai