One of the reasons why your dryer may not be heating, it could be a bad thermostat.

The dryer has three thermostats wired in series in the gas valve circuit. Wired in series means that they are wired like a chain, if any of them is bad the gas valve will not open.

Remember the Christmas tree lights that when one light was bad the rest of the lights didn't work? That is what a series circuit means.
 

The Hi-limit thermostat is a safety device located on the metal casing of the heating element. It is use to open the gas valve circuit if the heat is above 205 degrees in the heating element box

The operating thermostat is in charge of controlling the temperature inside of the dryer drum.

The thermal fuse is another safety device or switch use to open the gas valve circuit if the temperature inside the dryer  rises over 196 degrees.

The thermal fuse is a not resettable thermostat and when it blows, you will need to replace it with a new one.

As you could see there are many parts that have to be working properly in order for the dryer to produce heat.

The best way to learn how to check & replace the thermostats is by seeing how it is done.
 

You can also get access to the complete set of
videos that covers what to check when your
dryer won't heat. Click Here to go there

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