Fix a Gas Dryer That Will Not Heat - Complete How to Guide

Root cause tree and troubleshooting for a gas dryer that will not heat. This particular dryer needed new gas valve solenoids (SHUT OFF GAS PRIOR TO THIS JOB!). Other issues discussed include flame sensor and fuse. I discuss several if-then scenarios.
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Parts:
Solenoids amzn.to/2XnYADa
Tools:
Sockets amzn.to/2JQdjhK
Multimeter amzn.to/3edbxqc
Needle Nose Pliers amzn.to/2Ifcwd2
Flame Sensor amzn.to/3egPkrc
Disclaimer:
Due to factors beyond the control of Oliver Porter, I cannot guarantee against improper use or unauthorized modifications of this information. Oliver Porter assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. I recommend safe practices when working on appliances, gas equipment, and/or with tools seen or implied in this video. Due to factors beyond the control of Oliver Porter, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Oliver Porter.

[@RakeshPathak-lu8yc]

Always check the side window the sequence of operation.Very nice video in detail.Thankd

[@jadedone6900]

Oliver, this was an excellent video. The combination of video and on screen instructions was invaluable and I subscribed and liked. I also decided that this repair was beyond my abilities due to amount of disassembly, which was priceless. Thank you.

[@OliverPorter92]

Thanks for watching and glad it helped! Sorry you were unable to complete.

[@WielandAutoGroup]

You are an absolute stallion! Thank you so much for making this video

[@OliverPorter92]

Thanks for watching! So glad it helped!

[@michaeldvorak5556]

Use an electric skillet to test sensors like the high heat sensor. It should open around 220 degrees and close when it drops down to around 180 degrees. Look on it label: L220-40F. Use a laser type thermometer to measure. It may have continuity when cold, but open and close at the wrong temp.

[@OliverPorter92]

@@michaeldvorak5556 great method! Thanks for sharing!

[@elgriego6]

Hi. I have ohms reading? But switching to beeping on multimeter there’s no beeping.

[@brianperkins6121]

If the thermal fuse is bad , one must also replace the operating Thermostat as it must also be bad , The operating thermostat should have sensed the temperature is too high and cut off the heat well below the temperature the thermal fuse will blow at ,, the thermal fuse is there as a fail safe If the operating thermostat fails to cut off the heat when it should have done so .

[@jjjohn5914]

Very good video...Test results for solenoids seem to be in spec... so I'm not sure why you changed them out.
Could you clarify please?

[@OliverPorter92]

Thanks! They would not work when installed.

[@Fritooo2323]

My whirlpool gas dryer is lint free and clean. ignitor works and gas flame comes on for 15 seconds then goes off for 90 seconds then repeats. Is this normal with no clothes in the dryer?

[@n1kkri]

My dryer starts but the igniter does not light. I replaced the igniter but no luck. Imeasured the resistance of the igniter and it was 60 ohms so its good. I measured only 56 volts across the 2 pieces of metal that hold the igniter in place. I have in the past measured 120 volts. Any tips?

[@tonymallia1940]

any luck ken?

[@n1kkri]

@@tonymallia1940 yes, there was no power at the igniter. The problem was the Flame sensor relay. $13 and back in business

[@michaeldvorak5556]

@@n1kkri you have 2 coils in series. The ignitor is parallel to one, and the flame sensor is parallel to the other. If the sensor fails in the open state, you have power going through both coils, and the voltage to the ignitor is too low to light up the ignitor. The sensor should be closed when it first starts. This bypasses that coil and provides all the voltage across the ignitor coil to light the ignitor. When sensor detects the lite ignitor it opens, this gas valve opens and the ignitor is turned off. If the coils are working, you will have gas and a flame. The detector will see this and keep the ignitor off. If the ignitor cycles on and off but no flame, the third (secondary) coil has failed. It should have opened its valve when power was provided to the coils.