Re: Bosch SGS53A02GB
If you open the door whilst running you can easily tell if there is plenty
of water being sprayed around?
If not then you probably have a reduced flow due to pressure chamber and lower transfer pipe to the sump being blocked.
Is the machine heating up?
If not then this will be another reason why the programs are running longer.
To check this you need to know how to use a multimeter and check the resistance of the heating element.
Plenty of threads on this -use the search function and Bosch not heating…