The door switch Most common
A small switch at the door opening tells the dryer the door is shut. Its plunger wears, or the latch stops pressing it, and the dryer behaves as if the door were open. If your drum light no longer comes on when you open the door, that’s a clue: on many models the light runs through the same switch.
Colby tests the switch and the latch and replaces whichever one has worn out.
