How to Troubleshoot & Replace Whirlpool AP6008294 / WP338906 Flame Sensor

I started with what I was told to fix. The igniter. At the same time I replaced the gas valve coils. Just to be safe. Well still no flame. I called to see what would be my next step. I ordered the flame sensor and thermal fuse. Well the last part I changed was the thermal fuse and low and behold!! We have heat in the dryer!! 

Watched video on possible problem and ordered items needed, very impressed on how quick they arrived with regular shipping. 

Burner kept going out and and not re-igniting. I ohmed out the coils and they both were about 1k ohm each. After replacing them with new coils ( I never ohmed out the new coils) The dryer worked like it should Burner lit and cycled normaly. 

I replaced da bad parts with da goot wons. 

I watched the videos on replacing the coils but to put my mind at ease i decided to purchase and replace the flame sensor and the ignitor as well. 

The videos provided for replacing parts specifically stated which parts would cause the dryer to not heat. There were possibly four parts. I was not confident I could test the components and determine which was defective, and ordered the four. The parts were delivered in less than 24 hours and were the exact replacements. Access to the parts was a little different than described because of the different cabinet configuration of our dryer. Actual replacement took less than 30 minutes, the RPP videos helped a lot. 

I googled and watched a video, tested the easily accessible fuses, all fine. I was about to give up and call a service tech (undoubtedly a little pricey), but took a chance on the AppliancePartsPros video (listed ~3rd in the google search). It was simple, yet with good explanations, and covered most all possibilities instead of the easy first 3. So I dove back in, found the problem, and have my dryer back. The hardest part was figuring out how to remove the front panel of the dryer. Amazing too, is that I ordered the replacement broken part at 4pm on a Monday with standard (3-5 day) shipping. It arrived in less than 48 hours. That was way easier than coordinating time windows with an outside service tech. 

I think the gas valves, the two contact coil (No Ohms reading) so I changed them both and for good measure I change the flame sensor as well. 

Change all 3 parts 

Checked online to figure out what was wrong, then went with a total one time fix. Picked the most popular parts, ordered, and replaced the 5 parts. Our dryer is a Maytag LDG8506AAE with the lint trap built into the door opening...WARNING.. removing the dryer top is not required on this model as shown in the videos. Just remove the 2 screws on the front panel lower right and left hand corners, then push in the spring clips and remove the front panel with a out and down motion. The tub is then removed by removing 4 screws on the front brackets There. is an access door on the back of this dryer for the belt pulley. GOOD LUCK... It took me 1hr. to get passed the front panel problem.....