On my 4 year old Kenmore elite dryer the ignitor glows and
On my 4 year old Kenmore the ignitor glows and light the flame for a few seconds, then goes out. I replaced the gas valve coils,still does the same thing.Cleaned lint screen, checked white fuse and it has continuity, has black small sensor next to it, what kind of ohm value should it have? does not show continuity.Tech told me to take wires off black box on burner tube and connect them together then start unit. when I do that the igniter glows but does not turn on gas. Last but not least tested tempsensor on top of burner and it has zero resistance. This is a frontloader gas dryer, kenmore elite
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Re: on my 4 year old Kenmore elite dryer the ignitor...
HI, Check your 4" vent to the outside and make sure it is clean and that it has no kinks. Any restriction to the outside will cause the dryer to short cycle. All thermostats must have continuity. With the dryer running, remove the lint screen and check to see if there is good air flow by putting your hand in where the filter goes (it is safe). You should feel air rushing past your hand if the vent is clear. I hope this helps you. Please let me know if I can assist you further.
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The glowing if the ignitor indicates that the circuitry is good but the flame/radiant sensor is bad and/or one or both of the gas valve solenoid coils are not working. The flame/radiant sensor bypasses one the solenoid coils then when power is applied to the ignition circuit, the first coil opens the first valve, the ignitor glows and the flame/radiant sensor gets heated. It's contacts then opens when heated enough to unbypass the second coil and allow the gas to flow and be ignited.
Make sure the flame/radiant sensor is properly in place and aligned with the ignitor to allow proper heat sensing. You may check the continuity between the sensor's contact terminals as the ignitor glows. At first, the terminals should read close (zero resistance) and then open (infinite resistance) after about 30 seconds or so. If this is not the case, the sensor is not working and must be replaced.
The solenoid coils, one with 2 prongs and the other has 3, sitting on top of the gas valves must be both replaced if the flame/radiant sensor turns out good. But before doing so, make sure to run a test with the dryer completely assembled because sometimes the gas do not ignite when the dryer's cabinet is open. This is to prevent unnecessary replacement of the coils.
Feel free to update us about the result and if you need further advice.
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If you are having problems with your gas dryer not heating
the most common problem is that the ignitor goes bad. Even though it glows
sometimes it is still not working properly.
First thing to check is the vent. Make sure you have sufficient air flow to the outside. If you are not sure if you have the proper rate of flow, disconnect the vent from the dryer, turn dryer on and see if burner stays on longer. Do this with a couple of damp, spun-dry towels inside the drum. If the burner short cycles again, you need to replace the coils on top of the burner assembly. These are the two black round coils.
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.
Is this the scenario? It lights for a few cycles or maybe not at all. The ignitor glows and goes out but no flame. Comes back on then does the same thing. If so it could be failing coils (those two black cylinders on top of the gas valve assembly). There's a kit that includes both and it's a fairly simple job.