Question about Maytag Neptune MDG5500AW Gas Dryer

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Dryer turns but no heat

The ignitor glows and I have continuity across the flame sensor. Should I suspect the primary coil?

Rick Holmes

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In some cases, even if the igniter is glowing, the resistance may not be low enough to turn on the gas valve. If 3-5 yrs old, the igniter has probably gone bad. ($50.00 to $90.00 for igniter). The coils also have an occasion to go bad, albeit rarely.

Posted on Jun 01, 2008

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Our dryer stopped heating up. We cleaned out all the vents and repleced the ignitor. Still no heat. Any suggestions?


If the ignitor is glowing then check the flame sensor for continuity if it is not glowing then check the thermal fuse. If the dryer heats up for a few minutes then doesnt after that replace the coils

Jul 15, 2011 | Dryers

1 Answer

I have a 7yo Kenmore Elite gas dryer w/no heat. I tested all the possible culprits with my ohmmeter. I found the ignitor was not glowing so I replaced it. Now it glows but I still have no heat


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.

Jun 17, 2011 | Kenmore Dryers

1 Answer

I have an Amana Dryer Model # LGD20AW and when the dryer is first turned on the glow plug will heat up and ignite the gas but as the dry cycle continues the glow plug will heat up but no flame will ignite...


The glow coil or glow bar heats up and a sensor on the side reacts to the heat and then sends a signal to a gas valve.(solenoid valve) When the gas doesn't ignite when the coil is glowing... here are some reasons. 1. The sensor on the side of the burner assembly isn't working or sending power to the valve. 2. The valve is getting power but not opening. 3. The ignitor is not glowing hot enough to activate the flame sensor. Usually it is the sensor or the igniter not the valve.
Tom

Aug 10, 2010 | Amana Dryers

1 Answer

Gas dryer 4 yrs young and won't heat. Drum turns.


First thing to check is the ignitor underneath the drum. (You have to open the panel to see it) It should glow shortly after the dryer starts, then the flame starts and the ignitor shuts off. If the ignitor does not glow then it or the thermostat is bad. If the ignitor is glowing but the gas does not light then the flame sensor may have to be replaced. If the gas ignites but does not stay on either the flame sensor or the coils are at fault.
See also: http://home.howstuffworks.com/how-to-repair-a-dryer.htm

Dec 04, 2009 | Televison & Video

1 Answer

Dryer does not heat


First thing to check is the ignitor underneath the drum. (You have to open the panel to see it) It should glow shortly after the dryer starts, then the flame starts and the ignitor shuts off. If the ignitor does not glow then it or the thermostat is bad. If the ignitor is glowing but the gas does not light then the flame sensor may have to be replaced. If the gas ignites but does not stay on either the flame sensor or the coils are at fault.
See also: http://home.howstuffworks.com/how-to-repair-a-dryer.htm

Nov 04, 2009 | Video Cameras

1 Answer

Dryer spins, but no heat is generated. The dryer model number is 110.76662500


Hello,
This could be one of the following:

* Defective ignitor. Suspected when ignitor fails to glow at all. Confirm by testing for 120v at the ignitor terminals. If present, ignitor is bad. Otherwise, suspect the flame sensor.

* Failed gas valve or holding valve coil. Run ohms check on each valve. May also need to actuate each valve with a test cord since that may only fail after being actuated a couple of times.

* One of the thermostats are open. Run continuity check.

* Bad flame sensor. If flame fails to ignite at all and the ignitor does is not getting 120v, suspect the flame sensor.

If you are not comfortable performing these checks, call in a repair person to check these components.
Hope this helps.

Sep 08, 2009 | Kenmore Dryers

1 Answer

Dryer Model DE306 has stopped heating


First thing to check is the ignitor underneath the drum. (You have to open the panel to see it) It should glow shortly after the dryer starts, then the flame starts and the ignitor shuts off. If the ignitor does not glow then it or the thermostat is bad. If the ignitor is glowing but the gas does not light then the flame sensor may have to be replaced. If the gas ignites but does not stay on either the flame sensor or the coils are at fault.

Aug 13, 2009 | Dryers

1 Answer

The dryer was heating fine earlier, but now is not heating at all. Is there a pilot light on my dryer that may have been blown out?


Hi, With the dryer running, look into the small front panel and see if the ignitor is glowing at all. If the ignitor glows but there is no flame, the coils on the gas valve are bad. If the ignitor does not glow, you will need to (with the dryer unplugged) check continuity on the thermostats and the flame sensor on the side of the burner.
If any of these parts show no continuity, that part will need changed.
I hope this helps you. Please let me know if I can assist you further.

Vic

May 28, 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

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