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Dryer runs-no heat

The dryer will initially start normally and the flame is normal.After it cycles once, the ignitor comes back on but there is no flame. The gas valve and ignitor seem to be operating normally at first. Before this problem started there were two ocassions where the dryer would continue running long after it should have finished the cool down cycle.

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I had a problem once with a gas dryer that would come on, the pilot would glow and the flame would run on a shortend cycle. The coil that opens the gas valve had a short circuit that would only short out when it heated up. It would drive me crazy since it appeared to be working. The short cycle time the first time, and then maybe not at all once it was warm gave me mixed signals.

Posted on May 15, 2008

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Heats but wont stay heated


If the flame come on to start with, but then goes out and won't come back on I would suspect you have a bad coil on the gas valve.
If you see the flame cycle on and off, but the flame does come back on again this is normal. The flame needs to cycle on and off and not be on steady or the dryer would get to hot.
If the flame is cycling ok and the cloths just don't get dry then you need to check your dryer and vent for lint build up.

Aug 02, 2011 | Roper RGX4634KQ Gas Dryer

1 Answer

My amana gas dryer seems to be taking longer then normal to dry clothes. I've always used the moisture sensor and one day I noticed it had been running for 10 hours (although the clothes were dry and...


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

May 21, 2011 | Dryers

1 Answer

Roper rgx5634kq2 gas dryer. Starts out lighting like it should. It runs for a minute or two then flame goes out, then after a minute it comes back on. It will do this cycle a few times and then it will...


it's not the thermal fuse,the dryer wouldn't run and the ignitor wouldn't glow.sounds like you have bad gas coils,if the dryer runs for the first 15 to 30 minutes normally and then no more flame the coils are failing,when they are bad they work until they heat up and then nothing,when they cool down they work again,common problem,also you should clean out the dryer once a year ,clean out the duct that the lint filter slides into,if your vent line is long take it off from the back of the dryer and blow it out with a leaf blower,make sure the outside vent is clear first,you can have a fire and then you can pop the thermal fuse,clean it and your clothes will dry on time,let me know what you find

Aug 25, 2010 | Dryers

1 Answer

The dryer heats up at first but the burner won't ignite after it cycles off. The ignitor comes on but no flame. I changed the rear thermostat on the vent housing but that did not resolve the problem.


you have bad gas coils.when they are starting to die the dryer will run normally for the first 10 to 30 minutes and then no flame,the coils work fine until they heat up then nothing.when they cool down you'll have a flame again.easy fix,the coils are on top of the gas valve,take out the two phillips screws,remove the metal cover and change out the coils,that's it part number 279834.let me know how you make out

Jul 17, 2010 | Kenmore 74602 Gas Dryer

2 Answers

Gas Dryer only runs burner once after starting, why


Lets see, you have power to the gas assembly so the fuse is good and the ignitor will fire up. But she won't fire off again. The flame sensor is working because the ignitor is coming on and off. That means the control thermostat is working so everything is working. So what's the problem. Simple.933a1bb.jpg The solenoid coils heat up and quit on these machines with a little age. Very difficult to diagnose unless you know the trick.
Cheap parts link, your part sir: AP3094251,

May 14, 2010 | Maytag MDG2706A Gas Dryer

1 Answer

I have a a Whirlpool LGB6000KQ1 Gas Dryer. Sometimes the heat comes on, sometimes it does not. Could it be the thermostat or something else?


it appears as if your unit has a small plastic plug/access hole cover below the left corner of the dryer door. if you remove that you should be able to look within the dryers burner area and observe what might be happening..
if when you turn the dryer to a normal timed cycle, on high heat and start the unit, shortly after the dryer begins running you should be able to observe the glow ignitor glowing through that access hole, and shortly after that hear a click and flames appear, if is not glowing then there are probably thermal fuses blown out on the backside of your unit, or the ignitor is bad.
if however it does glow, and maybe even fire up once then all the safetys mentioned b4 are good.. now sit there and watch your ignitor/burner assembly.. the flame will cycle on and off depending on the dryers internal temperatures, but the main thing to look for is whether the ignitor glows, then fails to click then produce flames, if that be the case the gas valve coils are bad and need to be replaced part # is 279834 - M STYLE COIL KIT
hope this helps,
best of luck,
ttfn

Oct 25, 2009 | Whirlpool LGB6000KQ Gas Dryer

1 Answer

Flame does not cycle on Gas Dryer


This problem is caused by faulty gas valve coils. These electrical coils are right above the gas valves and when energized, these solenoids open the gas valves. It is recommended that if any of the gas valve coils are suspected of fault, that they both (all) be changed at once. Hope this helped and best wishes.

Sep 01, 2009 | Kenmore 63942 Dryer

1 Answer

Gas dryer lg8319w/l2 doesn't keep heating after started


Hi, You will need to change the coils on top of the gas valve. If the ignitor glows but the flame doesn't come on, this is your answer. It is a very common problem with the gas dryer. If I can assist you further, please let me know.
thanks
Vic

May 15, 2009 | Dryers

1 Answer

No Heat


Hello
Welcome to Fixya


Remove the vent line from the rear and try the dryer.
If it heats then that means there is a clog or kink in the vent line blocking the vent air from exiting which will stop the dryer from getting hot!
If not then it's another one of these problems.

Defective Ignitor (Gas Only)
When heated the ignitor used on your gas dryer must obtain a specific high temperature
in order to activate the flame sensor. This ignitor is fragile and susceptible to cracking.
A hairline fracture that is barely visible to the naked eye is enough to change
the resistance of the ignitor to a point that is will not work properly.
You can test the resistance of your ignitor. You should get a reading of 50-400 ohms of
resistance.

If the ignitor gets hot and then goes off after about 10-15 seconds and there is
no ignition, the problem is probably not the ignitor. It is most likely the gas valve
coils that are defective.

If the ignitor comes on and stays on, it is the flame sensor that is defective.

If the ignitor is not getting hot it could also be one of the thermostats that is defective.
The power for the ignitor is passed from the timer, through all of the thermostats,
limit switches and fuses to the ignitor. So if you are not getting power to the ignitor
during ignition, you should check the continuity of the individual thermostats and fuses.
DRYER DOES NOT HEAT



Defective Gas Valve Coil (Gas Dryer Only)

If the gas dryer will light once but will not relight until it cools down, it is likely the gas valve coils are faulty. These coils loose some strength when subjected to heat. When they become old, the addition of heat may be enough to prevent them from opening the gas valve when hot. However the coils still work when when cool.

An easy way to diagnose the coils when the burner is not lighting, watch the ignitor. If the the ignitor glows for 10 to 15 seconds but no flame is created, then the coils are faulty. If the ignitor is not glowing the problem is elsewhere.

Recent Customer Symptoms:
The dryer burner doesn't always come on when starting. If the burner does come on, once it goes off if won't come on again until the dryer cools down.



Defective Flame Sensor (Gas Dryer Only)
The flame sensor's job is to monitor the ignitor for sufficient heat
to ignite the gas. A properly operating flame sensor will pass a
continuity check under room temperature.

Common Symptoms
If the flame sensor is defective in the open position,
the ignitor will not get hot when the dryer is started.
However, if it is defective in the closed position the ignitor
will get hot, but the flame sensor will not allow the flame to ignite.
In this case, the ignitor will usually stay hot for a long period of
time.



Defective Thermostat
The thermostats are responsible for maintaining the proper temperature
in the dryer. Check the exhaust temperature of the dyer and if the
temperature is above 150 degrees, you will most likely need to change
the operating thermostat.

The thermostat can also fail in the opposite mode.
It can prevent the element from heating at all.
A failed continuity check at room temperature will verify this condition.

There are some special thermostats that are single pole double throw.
These thermostats are often used to control the timer when set to the
Automatic Dry cycle. If the dryer timer will advance in the Timed Dry
cycle but not the Automatic Dry cycle, then the thermostat could be the
problem.


Defective Thermal Fuse
The thermal fuse is in series with one leg of power to the motor.
If the fuse is open (no continuity) the motor will not run.

Location:
The thermal fuse is located in different locations according
to the model and brand of dryer.

Solution:
Check the thermal fuse for continuity with a volt/ohm meter.
If it is open, it will need to be replaced






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Jan 25, 2009 | Kenmore 73952 Gas Dryer

1 Answer

Samsung dryer smells like gas


Replace the operator coils. They are intermittant. Typical operator coils look like this:
089d400.jpg

Nov 27, 2008 | Whirlpool GGQ8831L Gas Dryer

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