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Dryer's flame cycles but will not burn

I have a Maytag LDG9806AAE Gas dryer. The burner fires up and runs for about 15 seconds, then shuts off. It will then cycle every shting down after around 5 seconds. Any ideas? I have replaced the thermostat at the burner and the solenoid valve coil already.

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  • erica graber May 11, 2010

    remove the exsaust from the back of the dryer and let me know how it cycles without that. Is it better or the same?

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Check the following to address this issue..


1. Gas valve coils
Igniter glows, then shuts off without igniting gas - the problem is probably with defective coils (black, located on top of the gas valve). It is recommended to replace all coils (usually two or three) if found defective.

Note: Sometimes the whole gas valve may be defective, thus not letting the gas out. However, this problem is not common.

2. Thermal fuse
Most dryers have a thermal fuse, which burns out when the dryer overheats, in which case the dryer will either not run at all or stop heating. The fuse is usually located on the vent duct, inside the dryer. A blown fuse will show no continuity when measured with a meter. Before replacing the fuse, make sure the blower wheel is not broken or clogged, and there is nothing blocking the venting.

Note: It is recommended by most dryer manufacturers to replace a hi-limit thermostat when replacing a thermal fuse.

3. Igniter
Igniter may burn out or break. Replace the igniter if found defective.

Note: Igniters are very fragile and break easily. It is recommended to handle the igniter only touching the ceramic part of it (usually white in color).

4. Flame sensor (or radiant heat sensor)
Replace the sensor (located near the igniter) if found defective.

Posted on Jun 03, 2009

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Ignition works but doesn't stay on long enough to heat dryer


its either the hi-limit switch is weak on the burner tube,or the gas valve coils on the gas valve are weak and can no longer keep the gas valve open to supply gas,if they appear warm after operation they are most likely bad

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I have a model LDG712 gas dryer. The flame ignites and burns for about 20 seconds. The flame then stops burning and it about 1 minute and 30 seconds or more before it lights again. The glow bar...


The flame should cycle on for about 50 seconds on the first cycle and approx 20 sec each additional cycle. I would check your airflow out of the dryer it my be restricted not allowing the flame to pull through the burner tube causing the unit to "short cycle". Its not likely a thermostat issue but if you were to replace a thermostat I would replace the cycling thermostat should be part number 3387134. Hope this helps.

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When a gas dryer starts and the burner does not stay lit more than one minute the flame sensor is not detecting the flame to as a by design safety feature the burner is automatically shut off. It is not sensing flame so it is shut off.

This is the most likely suspect. http://www.repairclinic.com/SSPartDetail.aspx?s=t-mdg5500aww-%3d%3di2681&PartID=2681

BEFORE you change this part make sure that the outside vent flapper and the ducting form the back of the dryer is free of lint. Disconnect the dryer vent and try it with nothing connected to the dryer. Also check around the lint filter area for lint especially in the bottom. If there is not a lint or ducting problem then by all means change the flame sensor.

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Burner lights 5-10 seconds shuts down. Good air flow. Gas smell at times out vent.


The burner will shut off for various reasons.

First, there is a sensor right at the burner flame. If the sensor does not indicate flame the gas is shut off to avoid filling your house with gas. It is usually a short metal rod. Oftentimes cleaning it will get it working again. Or the signal from the sensor isn't getting back to the controller, so check for loose connections.

This page explains it well.
http://www.acmehowto.com/howto/appliance/dryer/gdryer/check/flamesensor.php

There are some other sensors that will shut the heat down. A temp sensor where the hot air leaves the dryer drum. This is to keep from overheating the clothes and lighting them on fire. If this sensor is bad, or the wiring to it is not getting that signal back to the controller, the dryer will shut the burner down. Although 10-15 seconds is pretty short, this is a possibility. Try different heat settings to see if you get the same result. If it only happens on one heat setting you most likely have a bad temp sensor.

Visit here for more info.
http://www.acmehowto.com/howto/appliance/dryer/gdryer/check/thermostat.php

Another possibility is that the gas valve (solenoid) is getting near the end of its life and can't stay open long. This is not likely, but still possible since the burner does light.

http://www.acmehowto.com/howto/appliance/dryer/gdryer/check/gascoil.php

Next possibility is that the gas line is partially plugged. When the burner fires the gas pressure drops rapidly. When the burner goes out the gas sneaking past the obstruction raises the pressure back up.

Final possibility is a bad controller.

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