Dryer stop heating

Gas Dryer no heat: or shuts down soon after heating CHECK:

Thermal Fuse
If the air flow in the dryer is restricted, the temperature in the heating chamber can get hot enough to blow the thermal fuse. If the fuse blows, it cuts power to the coils that control the gas valve. The fuse is usually mounted to the exhaust duct just inside the back panel. You can check its continuity with an ohmmeter. If, after disconnecting the fuse, you get any reading other than 0 when you touch the leads of the meter to its terminals, it has blown. There's no way to restore it -- you'll have to install a replacement.

Igniter and Gas Valve Coils
TEST with a multi meter: The igniter is an electric conductor that works like the element in an electric heater, glowing hot enough to ignite gas when you turn on the dryer. This conductor can burn out, and when it does, it may glow, but it won't get hot enough to ignite the gas. At times it may give a reading of continuity yet fail mechanically and not get hot enough to ignite flame though it gets hot and glows and even may show Ohms or continuity ( close circuit) ?
Occasionally, the Gas safety valve and the electric coils that control the gas valve are defective -- they can wear out when the dryer gets old. When this happens, the igniter glows, but gas never enters the heating chamber or does not stay consistant.
Performing a continuity test on either part will help you determine whether or not you need to replace it. But the coils should also be tested for amount of resistance as well as Ohms. As they may be showing ohms yet not putting out enough resistance to keep proper gas pressure flowing. Most coils should show at least 1300 ohms ( GIVE OR TAKE 150 OHMS). Anything significantly less Thus u get an ignition but then it soon goes back out. The flame does not stay lit.

Air Flow and Heat
The motor that drives the tumbler also drives a fan that circulates air through the heating chamber and the tumbler and expels it through the vent. If the air can't circulate, perhaps because of lint blockage, the heating chamber overheats, which prompts the cycling thermostat to turn off the gas. The thermostat resets when the chamber cools, but the chamber heats up quickly and the thermostat again shuts off the gas. The result is that the temperature in the tumbler doesn't stay hot, and your clothes take longer to dry, if they get dry at all.

Warning
There's a big difference between a dryer that doesn't heat up at all and one that just doesn't get hot enough to dry your clothes. In the first instance, the problem is usually a defective part, and things should be back to normal after you replace it. In the second instance, the problem is caused by restricted air flow, and you need to clear the lint filter and vents and take steps to prevent lint build-up. If you don't, you'll use more energy for drying than you need and the dryer may continue to malfunction. Worse, you may have a dryer fire.

This is very rare on a gas dryer but I have seen it. If you have already replaced all that other stuff I would say it has to be inside the timer. On one I worked on once I could remove that orange wire and the dryer would function ok so I ordered a new timer, they sent me a bad timer. Same problem. I finally got a working timer after going through a bunch of mess. That fixed it. So if all the other components are working it very well could be the timer.

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you need to return it from the seller

Hi,

If your dryer is not drying like it once did or if you just have nottaken the time to give yourself a clean dryer in a long time then youneed to do that. At least once a year the dryer cleaning should takeplace. Lint build up in the dryer duct is one of the main causesfor your dryer to fail.

Here is the rest of this tip about DryerMaintenance

heatman101

Hi,

If your dryer is not drying like it once did or if you just have not taken the time to give yourself a clean dryer in a long time then you need to do that. At least once a year the dryer cleaning should take place. Lint build up in the dryer duct is one of the main causes for your dryer to fail.

Here is the rest of this tip about Dryer Maintenance

heatman101

Could just be the brushes on the motor
jb

replace your t-fuse again but also chekc to see if the vent going outside is restricted. if hte vent is smashed or clogged the heat has nowhere to go. i would say that is your issue. clean your vent before you change he t-fuse.

Hi, Is there ant heat at all? Is it possible the dryer heats at first and stops later in the cycle? The first thing to check is the 4" vent going to the outside. Make sure it is cleared of lint and that it is not pinched off at all.
If the vent is ok, you might need to replace the coils on top the gas valve.
I can help you with this. I just want to narrow it down.

Vic

Check the timer, and the sensor. Sounds like it is having a problem with the timer or sensor no noticing that the clothes are still wet. Please rate if satisfied. Thank you

There is a little sensor that tells the dryer when to heat and when not to heat. that sensor is bad. If you take the back of the dryer off you will see it. It is about the size of a half dollar and has 2 wires that plug into it. While you have it apart make sure that the dryer vent on the back of the dryer is not plugged with lint. Major cause for fires in dryers.