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Change the ignitor

Posted on Apr 24, 2010


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Why is my Kenmore 500 series gas dryer won't heat up, no flame.

Gas Dryer no heat: or shuts down soon after heating CHECK:

Thermal Fuse
If the air flow in the dryer is restricted, the temperature in the heating chamber can get hot enough to blow the thermal fuse. If the fuse blows, it cuts power to the coils that control the gas valve. The fuse is usually mounted to the exhaust duct just inside the back panel. You can check its continuity with an ohmmeter. If, after disconnecting the fuse, you get any reading other than 0 when you touch the leads of the meter to its terminals, it has blown. There's no way to restore it -- you'll have to install a replacement.

Igniter and Gas Valve Coils
TEST with a multi meter: The igniter is an electric conductor that works like the element in an electric heater, glowing hot enough to ignite gas when you turn on the dryer. This conductor can burn out, and when it does, it may glow, but it won't get hot enough to ignite the gas. At times it may give a reading of continuity yet fail mechanically and not get hot enough to ignite flame though it gets hot and glows and even may show Ohms or continuity ( close circuit) ?
Occasionally, the Gas safety valve and the electric coils that control the gas valve are defective -- they can wear out when the dryer gets old. When this happens, the igniter glows, but gas never enters the heating chamber or does not stay consistant.
Performing a continuity test on either part will help you determine whether or not you need to replace it. But the coils should also be tested for amount of resistance as well as Ohms. As they may be showing ohms yet not putting out enough resistance to keep proper gas pressure flowing. Most coils should show at least 1300 ohms ( GIVE OR TAKE 150 OHMS). Anything significantly less Thus u get an ignition but then it soon goes back out. The flame does not stay lit.

Air Flow and Heat
The motor that drives the tumbler also drives a fan that circulates air through the heating chamber and the tumbler and expels it through the vent. If the air can't circulate, perhaps because of lint blockage, the heating chamber overheats, which prompts the cycling thermostat to turn off the gas. The thermostat resets when the chamber cools, but the chamber heats up quickly and the thermostat again shuts off the gas. The result is that the temperature in the tumbler doesn't stay hot, and your clothes take longer to dry, if they get dry at all.

There's a big difference between a dryer that doesn't heat up at all and one that just doesn't get hot enough to dry your clothes. In the first instance, the problem is usually a defective part, and things should be back to normal after you replace it. In the second instance, the problem is caused by restricted air flow, and you need to clear the lint filter and vents and take steps to prevent lint build-up. If you don't, you'll use more energy for drying than you need and the dryer may continue to malfunction. Worse, you may have a dryer fire.

Aug 21, 2014 | Kenmore Dryers

1 Answer

I have a whirlpool gas dryer. Model# WGD55505Q0, Runs and blows air. no heat. I Shook the dryer and it worked 4 a few minutes. Now nothing

The problem sounds like the gas valve solenoid coils has gone out. Remove the front panel to access and have a view of the burner assembly then start the dryer to check whether the igniter glows red hot or not. The solenoid coils are indeed not working and need to be replaced if the igniter glows red hot but no gas is ignited.

Disconnect power to the dryer then pull the lint filter out and remove the screws near the opening.

Insert a putty knife or similar tool between the top panel and the front panel to release the clips securing the former to the latter on both sides as shown then rotate top panel up to the rear of the dryer.

Remove the front panel screws then lift the panel up and swing it to the side. Do not disconnect door switch since you are going to start the dryer.

You now have access and view of the burner assembly. Plug the dryer in then start it. Unplug the dryer and disconnect the flame/radiant sensor if the igniter glows red hot then plug the dryer back in and restart it. Replace the flame/radiant sensor if the dryer heats up with the sensor disconnected.

Replace the solenoid coils if the dryer still does not heat up if the igniter glows red hot and the flame/radiant sensor disconnected. Disconnect the wires from the coils and remove the screws from the bracket then pull the coils out. Slide the new coils in then secure it with the bracket and reconnect the wire harnesses.

In case the igniter does not glow, remove the back panel and bypass the thermal cut-off and the high-limit thermostat. Disconnect the wires shown then jump a wire between them and the two are bypassed.

Start the dryer then check again whether the igniter now glows or not. The igniter is broken, probably due to the shaking, and needs to be replaced if it fails glow now that the thermal cut-off and the high-limit thermostat are bypassed. The igniter is very fragile and easily breaks. Extra care must be done when handling it to about breakage.

Either the thermal cut-off or the high-limit thermostat has failed if the igniter glows with the two bypassed and the dryer heats up. Most likely it is the thermal cut-off but in either case, both of them must be replaced. Simply unscrew them from the box then install and secure the new ones. But if the dryer still does not heat up even with the flame/radiant sensor disconnected, the solenoid coils also need to be replaced.

Feel free to update us about the troubleshooting and repair. This is a pro bono service and rating the advice/solution should you find it helpful as a gratitude will do and much appreciated. Do not hesitate to ask further questions should you need clarification if something is unclear or not applicable before giving an adverse rating.

Disclaimer: This advice is intended solely for the asker droot559 and tailored specifically for his/her problem. It may not be applicable to other dryers and may fail to address heating problem. Post your own problem and include the make and exact model number of your dryer for the specific advice on how to address your problem.

Aug 17, 2010 | Whirlpool Dryers

2 Answers


No you should replace the coils. 3a3915a.jpgWhy? You know you are getting power to the gas assembly so that means the fuse and control are functioning. The igniter glows so that is good. The Flame detect is fine because it shuts down the glowbar when it heats up. So those pesky coils get hot and quit. They eventually cool back down and work a little more, very aggervating to diagnose but easy to fix.2b3709e.jpgNote you do not have to remove the gas assembly to replace these coils.

If you need further help, reach me via phone at

Apr 23, 2010 | Whirlpool Dryers

1 Answer

Sears kenmore gas dryer 417.92052101does not stay lit.

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.

If you need further help, I’m available over the phone at

Jul 11, 2009 | Dryers

1 Answer

Dryer comes on in the beginning then flame shuts off and then

check your dryer vent for a clog let me know what you find

May 01, 2009 | Dryers

1 Answer

Maytag gas dryer model#NDG2330AWW heating problem

your gas coils are bad. they open up for the first cycle but fail to after. Replace your coils and this will solve your problem

Dec 13, 2008 | Maytag Dryers

2 Answers

Maytag gas dryer model # SDG305DAWW

replace the coils atop the burner assy itself, part number 279834..

Dec 02, 2008 | Maytag Neptune MDG5500AW Gas Dryer

1 Answer

Gas dryer not heating properly

replace the coils on the gas valve. they are cheap and you can buy them online or at your local parts outlet. you'll be amazed how cheap &cuick th fix is!

Jul 26, 2008 | Kenmore Dryers

3 Answers

Intermitten Heat up

make sure that your vent is not plug up can you go outside your house and feel good air coming out the vent when the dryer is turn on if so the only other things it could be is the coils that sit on the ignotor assmebly or the high limit termistat is not working properly the coils are little black circle coils that sit in the ignitor assmly should have a metal braket across the top of them holding them in you can check resistance on these coils if you have an meter

Mar 22, 2008 | Kenmore 72802 Gas Dryer

1 Answer

Kenmore no flame

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.

Jan 03, 2008 | Kenmore 75944 Gas Dryer

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