My dryer starts with heat and after 10 minutes no heat let sit 10 minutes heat again and so on ./ I have changed the cycling thermostat same problem

I had a tumble dryer that stopped working and after much investigation it turned out to be an internal thermostatic switch and lots of fluff around the internal filters. ( Mine had 2 of them 1 would cut the heat and kick back in when the temperature dropped and the other one would completely cut all power rendering the drier non usable until cicuit breaker thermostat was replaced. The reason they cut out is to prevent overheating and possible fire. When the thermostat gets to certain temperature it breaks the circuit. Apparently you shouldn't stop the drier until it has completely cooled down as there will be too much heat which could cause a fire, which is why most drier cycles have 10 minutes of cool/ non heated air at the end. So in conclusion I would take all the filters out and give them a good clean and try to avoid opening the door while there is still a lot of heat in the drier. I'm not sure if this will help but its a starting point.

The problem is either of the cycling thermostat, high-limit thermostat or the gas valve solenoid coils sitting on top of the gas valve assembly. Disconnect power then verify any of these condition by bypassing the thermostats. Refer to the image below and locate the thermostats.

Note: This is an image of an electric dryer but the thermostat and the thermal cut-off (cut-out) locations are the same.

Disconnect each of the thermostat wires then connect and insulate them properly. Once done, reconnect power and start the dryer. The gas valve solenoid coils are indeed faulty and both need to be replaced if the problem still persists. Click here for the procedure in replacing the solenoid coils.

Gas Valve Solenoid Coils Replacement Procedure

Either or both of the cycling thermostat and the high-limit thermostat are malfunctioning if the dryer continues to heat up with the thermostats bypassed. Disconnect power then reconnect the cycling thermostat wires but keeping the high-limit thermostat bypassed. Reconnect power then start the dryer. The high-limit thermostat is the culprit if the dryer continues to heat up. If not, then the cycling thermostat is the culprit.

Also do the other way; that is reconnecting the high-limit thermostat wires but keeping the cycling thermostat bypassed. The cycling thermostat is the culprit if the dryer continues to heat up. If not, then the high-limit thermostat is the culprit.

Replace the faulty thermostat and it should solve the problem.

you have bad gas coils.when they are starting to die the dryer will run normally for the first 10 to 30 minutes and then no flame,the coils work fine until they heat up then nothing.when they cool down you'll have a flame again.easy fix,the coils are on top of the gas valve,take out the two phillips screws,remove the metal cover and change out the coils,that's it part number 279834.let me know how you make out

Sounds like a faulty high limit or cycling thermostat. The thermostat tells the dryer to heat until the interior of the dryer reaches a certain temp. It should be mounted on the exhause duct inside the back of the dryer. It should look something like the one in the picture:



Hope this helped and best wishes.

sounds like a bad cycling thermostat!

you can replace te coils mounted atop the valve itself, somtimes after the heat up they nologer allow the gas valve to come on..paret number 279834 comes as akit with both coils!

Start any cycle. Dryer runs for 10 to 15 minutes, then stops before cycle is complete. Start again, stops again in 10 to 15 minutes.

Your thermostat could have problem and it confused the temporature inside the dryer. You should change the thermostat. To make sure you can use VOM (vol-amp-milimeter) device to check it. If it reads 0, it means OK. If it reads another number, it is faulty and need changing a new one.
Good Luck

THE KENMORE DRYER I HAVE... IF REN IN THE COTTON CYCLE IT WILL RUN FOR 50 MINUTES AND SHUT OFF. ITS BOLWING HOT AIR AND THE OTHER CYCLES SEEM TO WORK FINE WITH OUT SHUTING DOWN SO ID APPRECIATE A TIP ON WHAT THIS PROBLEM COULD BE

sounds like you are replacing the hi limit thermostat try replacing it with the cycling thermostat as well