Question about Maytag Neptune MDG5500AW Gas Dryer

1 Answer

Flame burns for a couple of minutes then goes out.

I have replaced the radiant heat sensor and thermal fuse on blower housing and the cycling thermostat and problem still is happening.

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  • dashdel Oct 05, 2009

    Rylee, When i start the machine the glow plug starts ignition and GAS burns for about 2 to 3 minutes then goes out. Then during the drying cycle the glow plug (glows red) to start the gas again but the gas just doesn't start until the machine cools off for 20 to 30 minutes and when I start again it works again for a couple of minutes as described above.


  • dashdel Oct 05, 2009

    Informative reply but still need more info...

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Hi

Thanks for using FixYa. As you have already checked and replaced the radiant sensor and thermal fuse. I’ll suggest you to check and see if you have 110 volts coming to the gas valve at this type of a connector. If you have voltage, then unplug the dryer and check the following parts. Some dryers have 3 coils instead of the 2 coils. If you do not have voltage coming to the burner, then you will need to check the timer contacts that feed the gas burner, hi limit thermostat, operating thermostats, the safety switch on the motor, and any other point that you can see on your wiring diagram picture that feeds voltage to the burner. The coils on the gas valve are very bad for working once or twice and then quitting. If you find a open circuit on one of the gas coils, replace them all = less problems later on. If the glow coil does not work (get red), check it with a ohm meter for continuity. Inspect the igniter for small burnt spot on dark gray or black part of igniter or check for 110 volts to igniter wire plug when dryer should be calling for heat. In older style dryers the igniter is separate from the holder and the holder can no longer hold the igniter tight enough and the two parts burn/arcwhere they touch each other = new igniter and holder.
Does the igniter get red and stay red, or does it get red, you hear a click and it goes off, then a minute later its gets red again? If so you possibly have a bad set of coil valves. If the igniter gets red and stays red constantly then it’s the flame switch that is bad and maybe welded closed.


Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks


Rylee

Posted on Oct 05, 2009

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1 Answer

No Heat- have replaced thermal cut off, thermal fuse and the heating element with no success. Any idea what else I should check?


  • Thermal Fuse,Timer, Temperature Sensor, Coils, Gas Control Valve, Radiant Flame Sensor, Igniter, Cycling Thermostat, High Limit Thermostat, Heating Element!
  • The things listed above can all cause no heat in drying if they are not working, or working correctly!

Mar 02, 2016 | Kenmore Dryers

1 Answer

Propain gass dyer. runs but very little heat. replaced gas valve coils and no change. Now I believe I have to check limit switches, but not sure how to test..What about the RADIANT SENSOR? NEED...


Hi.

More than limit switches if burner is turning on but heating is poor you should check cycling themostat and then blower motor, lint filter and parts comprised in blower assembly.

When the problem is the high limit, there is no heat at all.
When the problem is radiant sensor, there is no heat at all.

Poor heating means either: defective cycling thermostat; clogged air ducts; defective blower system, problem with timer or temperature selector.

If the heating turns off in the middle of the cycle check also door switch.

Here Cycling thermostat:


10_22_2011_10_57_23_am.gif

The cycling thermostat is located in the blower assembly. Here removal instructions. Disconnect power first:

10_22_2011_11_00_07_am.gif

The thermostat can be tested using a multimeter. Set the multimeter on impedance (Ohms). Good thermostat will read about Ohms at room and will read open (infinity) at 150F.

Once in there also check the thermal fuse and check blower assembly. Remove lint and make sure blower is working. Thermal fuse is tested reading impedance across its two contacts. Remove fuse from circuit and touch with multimeter probes fuse's contacts (same for thermostat). If fuse is good it will read zero Ohms or very little impedance. a bad fuse reads infinity.

Check also the exhaust. Make sure there is no blockage.

Operations are illustrated from page 72 of service manual: Here the service manual.


10_22_2011_11_09_36_am.gif

About the flame sensor, that is a part that rarely fails. If the dryer ignites the radiant sensor is not responsible for the fault.
The radiant sensor is mounted in parallel with the coil.



When temperature is reached the sensor opens up allowing power to burner valve (valve 2). Testing the flame sensor like a thermostat is difficult because it opens up at high temp. I read volts while operating. I suggest users carrying only maintenance that can be performed with power off.

10_22_2011_11_18_01_am.gif

If the burner shuts down at random more than the sensor check the door switch. Run a cycle with door switch contacts jumped.

Start checking cycling thermostat and air ducts, those are problems that usually cause low heating.

Regards.

Ginko

Oct 21, 2011 | Maytag Neptune MDG5500AW Gas Dryer

1 Answer

My gas maytag dryer has no heat


first check the thermal fuse for continuity in the dryer blower housing/vent,then check the high-limit and/or cycling thermostats and the radiant sensor(flame eye) on the burner tube of the unit,then check the ignitor in the burner tube housing and finally the boost and secondary gas valve solenoid coils on the gas valve body inside the unit near the front entry of burner tube

Apr 29, 2010 | Maytag Neptune MDG5500AW Gas Dryer

1 Answer

I have a maytag gas dryer model no# ldg7314aae.The dryer runs but there is no heat. the dryer vent was cleaned as well as the interior of lint and still no heat.I was wondering where to start as far as...


your thermal fuse near the dryer vent opening or blower housing inside the unit,this is a one-shot fuse when it burns out you can't reset it,you need to replace it,then the radiant sensor(senses the flame),high-limit and cycling thermostats located on the burner tube on the dryer,then the boost and secondary gas valve coils located on the units gas valve body near the gas inlet to the burner tube

Apr 27, 2010 | Dryers

1 Answer

Dryer tumbles continuously but does not dry. When


Check the following areas to combat this issue. the most common problem spot will be a blown Thermal fuse, but in your case, i would pay close attention to the gas valve coils.


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.

Oct 03, 2009 | Kenmore Dryers

1 Answer

I have a lgr4634jq1 gas dryer flame wont stay lit runs but no heat


Check the following areas to combat this issue. the most common problem spot will be a blown Thermal fuse.


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.

Sep 09, 2009 | Whirlpool Dryers

1 Answer

No heat burner comes on for a few minutes and then goes out


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.

Jun 02, 2009 | Kenmore 72062 Gas Dryer

1 Answer

Dryer's flame cycles but will not burn


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.

Jun 01, 2009 | Dryers

1 Answer

Dryer does not heat the starter will start the flame but it got disconnecter after couple of second...No matter what program is choosen


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.

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1 Answer

No heat


1. Gas valve coilsIgniter 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.

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