While you wait for answers, we may have found some information which could help you.
Click here for Replace Belt Tumble DryerBosch excel condenser dryer 6307?
Help! my bosch classixx tumble dryer has x3 lights flashing and beeping!?
Bosch Classixx not heating even after trying red button reset ?
Where can I get a wiring diagram or service manual for Bosch Classixx dryer?
belt to slack. ?
Bosch exxcel condenser dryer WTL6307GB?