Obviously, there are numerous possibilities. A common one would be the temperature overload fuse and a common reason for it to go is too much lint buildup on the screen. Next, check the heating elements. Look at the schematic to help locate things.
Your question is not sufficient to answer. You have not informed model no., gas or dryer.
There may be several problem can be happened with your dryer
1. Heating element may be goes bad
2. power supply: Gas dryers have a valve that allows the gas to power the heating element. If the valve is closed, the dryer will still run, but it won't heat up. Find and turn the valve so that it is in the open position. If you have an electric dryer, check to make sure the wiring is correct - you may need an electrician to do this. The circuit may be wired incorrectly, allowing for the dryer to tumble but not heat. Along these same lines, in most cases, one fuse is reserved for the heating element and another for the tumbling. Check to make sure the heating element fuse is not blown or that the circuit breaker has not been thrown.
3. Broken Dryer Parts: Dryers have a heating element and thermostat that control the heat levels. Over time, heating elements can partially or completely burn out. How to repair your heating element depends on the brand and model of your dryer. Faulty thermostats can also cause your dryer to stop producing heat, although it will still tumble. If you are comfortable making the repairs yourself, your dryer manual will tell you how to replace a broken thermostat according to your make and model of dryer.
4. Other Considerations: Sometimes simple human error can cause a dryer to heat but not tumble. Some dryers have an "Air Dry" or "Fluff" selection on their controls. If you inadvertently choose this function, your dryer will tumble without heating. In addition, gas dryers need space around them to properly ventilate the gas burner. Otherwise, it will not function properly and the dryer will not produce heat. Do not put gas dryers flush against a wall or allow rugs or drapes to touch it.
These are the possible reasons. Before trying yourself see the user manual guide or call kenmore customer care executive for help.
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