My dryer is gas and when i set the timer the pilot lights and then after about 5minutes the light goes off and cold air is being blown out instead of hot please help!!!!

I depends on if you have gas or electric heat. If electric, you could have blown a fuse. If gas, your pilot light may be out.

It is all automatic, when you press start the power is sent to the gas assembly (if the timer is set for heat). The power originates from the cord to the timer to the temp control (on the blower housing) to the fuse next to the control, and to the gas assembly. The solenoids ignitor and flame sensor are all energized at once. The solenoids cannot release the gas unless the ignitor drops out of the circuit. That is the job of the flame sensor. Once the sensors bi-metal bends and opens the circuit, no more power goes to the ignitor< hoever, once the ignitor is glowing it generats a signal and becomes a thermogenerator with holds open the solenoid (holding coil) If for some reason the gas did not ignite the glow coil will cool off and shut down the solenoid. So what can go wrong? Lint buildup in the blower housing cause the fuse to melt. No power can be sent to the gas assembly. The flame sensor is open and not allowing power to the ignitor, the ignitor is open and not glowing. Old timey dryers had a pilot light. You hold down on the red lever and light the flame. Then release the lever and the pilot stays lit. I doubt if yours has a standing pilot. How modern gas dryer work:



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Motor runs, but main burner will not ignite
1.heat switch set wrong---correct switch setting
2.defective timer or timer circuit---check timer wiring--replace timer motor or switch as needed
3.defective centrifugal switch in motor---clean switch or replace as needed
4.gas supply valve closed----open gas valve
5.inoperative solenoid coil---test coil for open circuit & the voltage to it
???
Pilot burner goes out
1.insufficient gas supply---- low gas pressure or clogged pilot filter or partially closed gas valve
2.carbon deposit on thermocouple tube---clean tube & check pilot burner for proper combustion
3.improperly adjusted pilot flame--adjust pilot flame until faint yellow tip begins to appear
4.faulty ignition or reset valve or thermocouple---replace

Clothes not drying, but dryer runs & heats
1.defective operating thermostat---test thermostat, replace if defective
2.fan or it's pulley loose on shaft---tighten set screw
3.incorrect heat or timer settings---reset timer
4.clothes to wet when placed in dryer----wring out or extract water from clothes before placing in dryer
5.clogged lint screen or duct (little air motion)---clean out lint screen & duct

I'm having the same exact problem... At first we thought was the vent... but the way the flames goes out... it seems that there is "not enough oxygen" more than "blown out by the wind"... right after both main & pilot goes out, I can't even light any external flame inside the chamber... and it doesn't feel like the outside cold air coming in... it just feel like there is some sort of gas in the chamber that's so strong, it prevents flame... and the only thing I can think of is that it doesn't have enough oxygen, but too much natural gas, and flame can't sustain.

Hi

The pilot light flame would sometimes get very small and keep going out. This was usually because the pilot orifice was getting dirty and was partly plugged. The pilot orifice must be cleaned out when the flame becomes too small to light the main burner. You can blow air through the pilot assembly to help clean it out, don't use something metal in the pilot orifice hole or you risk enlarging the pilot gas feed hole and the pilot light may be too BIG. If your pilot flame keeps "going out", chances are you will need to replace the pilot latch do make sure the vent hood flapper is closing ok and no outside air blowing in is effecting the pilot flame.
This is a thermocouple that sensed the heat from the pilot flame and kept a small amount of gas flowing to allow the pilot light to stay lit. If you followed the instructions ( usually found inside the small access door on the front bottom ) on how to re-lite your pilot when it goes out and the flame will not stay on, replace the pilot latch assembly.

Please accept the solution and revert for further assistance.

Thanks
Rylee

should have electronic igniter that light gas after turned on.

hi,
1) When this happens, something has interrupted the heat source. Run the dryer for a couple of minutes to see if it gets hot. Be sure you don't have the dial or controls on a non-heat setting, such as "Fluff" or "Wrinkle Control."






 


2) On an electric dryer, this may mean that the circuit breaker or fuse that controls the power has blown; reset or replace this. Be aware that a dryer may have two breakers or fuses. The motor will run when one works, but the heating element requires both.

3) On a gas dryer, recheck the control's setting to be sure it's not on a heat-free setting. Check the gas valve behind the dryer to be sure the gas supply is turned on. Also make sure the house's main gas valve is turned on.

4) Most modern dryers have electronic ignition instead of a pilot light. If yours has electronic ignition and isn't heating, call a qualified repairperson.

On an older dryer, make sure the pilot light is burning. If it isn't, relight it. You can find directions in your owner's manual, and pilot light instructions are often mounted next to the pilot light on the burner, too.


Thanks for using FixYa

Check if the dryer is heating, if it is not heating check the following There's no heat

If the ignitor glows, and then goes out without lighting the gas, replace the gas valve coils. I'll need more information about your dryer to tell you how to do this. (model number.)

When this happens, something has interrupted the heat source. Run the dryer for a couple of minutes to see if it gets hot. Be sure you don't have the dial or controls on a non-heat setting, such as "Fluff" or "Wrinkle Control." On an electric dryer, this may mean that the circuit breaker or fuse that controls the power has blown --check and replace or reset. Be aware that a dryer may have two breakers or fuses: the motor will run when one works, but the heating element requires both. On a gas dryer, recheck the control's setting to be sure it's not on a heat-free setting. Check the gas valve behind the dryer to be sure the gas supply is turned on. Also make sure the house's main gas valve is turned on. On an older dryer, make sure the pilot light is burning. If it isn't, re-light it. You can find directions HERE or in your owner's manual (pilot light instructions are often mounted next to the pilot light on the burner, too). Note: Most modern dryers have electronic ignition instead of a pilot light. If yours has electronic ignition and isn't heating, call a qualified repair person.