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Re: Gas ignites but goes out after 15 or 20 seconds
Hello gdurawa Welcome to Fixya My name is Huum,
You said, upon starting my Kenmore gas dryer the igniter glows and the gas
ignites, but the gas goes out after 15 or 20 seconds - clothes don't
This means either the igniter is bad and not getting hot enough to make the gas continue to release completely and stay open, so it shut off. or you have a bad gas module. Or a bad gas valve without enough pressure. Needs to be diagnosed hands on at your location .
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Model number would help but I'll give some general info. Most Kenmore dryers are usually made by Whirlpool so I'll give info for that type dryer. The 1st thing to check on a no heat is if the glow bar ignitor is coming on. At the cycle start it should glow red hot or orange. If no glow the glowbar may be burned out and needs replaced. This is the most common problem in a gas dryer. If you see the orange glow for about 15 seconds and it goes out ---that is normal. That usually means you may have a bad magnetic coil on the top of the gas valve. There are actually 2 coils on the valve and if either one goes bad the valve will not open and let gas through to ignite. They need tested with a multimeter. Thats the 2 most common problems with gas dryers.
if you hear the valve clicking but no gas the valve is bad.when the burner lights theres a probe that senses that it is lit and sends a microvoltage back to the controller to tell its lit.check to make sure all ground wires are grounded to a clean metal surface.
does the igniter glow white or orange? if it is orange you need to replace it. has to be white hot to ignite. if the igniter is white it could be the coils not opening the gas valve all the time - an intermittent problem.
Watch the burner assembly, shortly after starting the
dryer the ignitor should begin to glow. If it glows for several
seconds (up to 15 seconds) and then goes out, then the problem
is probably the solenoids (coils). If the ignitor glows and stays
on, then the problem is usually the flame sensor.