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Dryer is running but there is no heat

I have replaced the two coils,the 2 prong and the 3 prong,still no heat.I have replaced the igniter,still no heat,since i have narrowed it down a little what could or should be my next step, oh the igniter did not even lite or glow,what would keep the igniter from lighting.

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Possible thermal fuse on back next to blower housing or flame sensor on side of burner ..short the wires on flame sensor together to ck

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Kenmore Elite He3 gas dryer (110-92832100) not heating. Igniter glows red for a min or so, drum spins, hear a loud 'buzzing' noise....

The problem could be flame radiant sensor or in most cases the gas valve solenoid coils sitting on top of the gas valves. The radiant sensor must be aligned perfectly with the igniter. The radiant sensor contacts bypasses one of the gas valve solenoid coils and as the igniter heats up it makes the sensor contact trips unbypassing the coil and allowing the gas to flow and be ignited.

The problem is with the solenoid coils,
one with 2-prongs and the other has 3, if the radiant sensor is aligned with igniter and working perfectly but no gas is ignited. The buzzing sound is coming from the coils trying to operate the valves. Replacing both coils is the simple and only viable solution.

Jul 18, 2011 | Kenmore Elite HE4 Electric Dryer

2 Answers

My Kenmore gas dryer 417.90042990 will not heat. Otherwise it works fine. How can I fix it?

Here is the troubleshooting order. The first thing to check is the igniter if glowing red hot when the dryer is started and runs. If it turns red hot, the problem is with the radiant sensor or the gas valve solenoid coils. The radiant sensor must align perfectly with the igniter. The radiant sensor contacts bypasses one of the gas valve solenoid coils and as the igniter heats up it makes the sensor contact trips unbypassing the coil and allowing the gas to flow and be ignited.

The problem is with the solenoid coils sitting on top of the gas valves, one with 2-prongs and the other has 3, if the igniter turns red hot and the radiant sensor is aligned with it and working perfectly but no gas is ignited. In this case, both solenoids must be replaced. The resistance of the 2-prong coils is around 1200 ohms while the 3-pronged one is around 1320 ohms between the outer prongs.

The igniter is good if it reads 100 ohms. The safety thermostat on the burner cone is blown open if the igniter does not glow red hot. Check the continuity of the safety thermostat and the cycling thermostat on the bower housing. Replace both the
safety thermostat and the cycling thermostat if the safety thermostat is found open.

Please accept the solution should you find it helpful and/or informative. Accepting the solution will not stop you from posting comments or additional information. You can still communicate with the expert should you need further advice regarding the issue stated herein.

Jul 09, 2011 | Kenmore 63942 Dryer

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

My gas dryer is 3 years old and it starts to heat up when it is turned on and then stops heating while running.

This is usually due to the two gas valve solenoid coils sitting on top of the gas valves, one with 3 prongs and the other has 2. The coils work fine when cool but one or both are weak and fail when get heated. Both coils must work to open the two gas valves in order for the dryer to fire up. The coils are not repairable and the only viable solution is replacing both of them. Replace the solenoid coils and it should solve the problem.

Feb 28, 2011 | Amana DLG330RAW Gas Dryer

1 Answer

I have a Maytag Nepyune dryer model# MDG4000BWW. The drum turns, the ignitor glows but the gas does not always ignite. When the ignitor is glowing, if I wiggle the wire going into the 2 prong coil, I here...

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.

if you dryer is gas check out this gas no heat tip....

If you have an electric dryer, you can have many different things that can go wrong causing the dryer not to heat.

check out this electric no heat tip...


Aug 27, 2010 | Dryers

2 Answers

Coil replacement

I'm not an expert but assuming you ordered the coils for your dryer your dryer must have them. I just finshed repairing my kenmore gas dryer after about 10 minutes the gas would shut off. This is becasue the coils that are on top of the gas line before the ignigter were defective. The coils control the gas valve and when my dryer got hot the coil being defective would close the valve. There are 2 coils a 2 prong and a 3 prong. Remove the front panel to gain access to the bottom of the dryer from there you will see your coils about as round as a quarter and 10 or so high. unscrew the screws holding down the retainer and undue the electrical clip. reverse for the install. good luck!

Dec 13, 2009 | Kenmore 72802 Gas Dryer

1 Answer

Dryer heats up and then stops heating

My gas one just did this. I tested the fuse myself located on the side of the lint trap. It was fine using my electrical tester. I then took the 2 coils off which are easy they are located on the burner. 2 screws removed the plate under are the 2 coils. Took them to ACE hardware were they tested them. The 2 prong was stuck in the open position. The three prong was fine. , I still replaced both and it works great now. What happened was the burner would kick on then when it hit operating temperature it would shut off. Then when it needed to kick on again the 2 prong being stuck in the open position wouldn't ignite burner again.

Jun 22, 2009 | Maytag Neptune MDG5500AW Gas Dryer

1 Answer

Alg331raw gas dryer. Runs but no heat. Worked

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 04, 2009 | Amana ALG331RAW Gas Dryer

1 Answer

Dryer gets warm at first but then cools down

Check the hi limit thermostat and the cycle thermostat. They may be opening too soon.
Remove the connecting vent on the rear of the dryer exhaust and see if it cycles normally.
The flame sensor may be malfunctioning.
If the gas valve coils are good, these are the only other possibilities.

Mar 28, 2009 | Whirlpool LGQ8000JQ Gas Dryer

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