If the dryer timer does not advance properly inspect the moisture sensor bars for damage which can cause the automatic drying cycle to not work properly.
Ge dryer moisture sensor bar.
There are a few basic ways a dryer moisture sensor can work.
Your appliance may differ depending on the manufacturer and model.
This video is intended to give you the general idea of the part replacement procedure.
Smart 240 volt diamond gray stackable electric vented dryer with steam and sanitize cycle energy star 1 079 00.
A dryer moisture sensor is a useful device that keeps your clothes from being over dried or still wet at the end of a dry cycle.