This excerpt from the user's manual can explain the problem of your switch.
"... water drips appear along the top edge of the drum door? A two-filter system with two lint seals is used to prevent lint build-up in the heat exchanger. after cleaning the heat exchanger, the GE GFMS175EHDG dryer or every switch has water leaks? Use the Hot Air program to remove or reduce unpleasant odours from clean cotton textiles (duration: The deodorising effect is less noticeable on synthetic fibre clothing. 1.0 kg maximum*
* Weight of dry linen
A program change is no longer possible (protection against unintentional changes)...."
WHIRLPOOL AWZ 3797, SIEMENS WT44W2ECO, WHIRLPOOL FFT M11 8X3B IT, 869991634600, , AEG T8DEC84S, 916 097 966, GORENJE DEH 72/G, GE GFMS175EHDG, GFMS175EHDG