How to Troubleshoot & Replace Whirlpool AP6009404 / WP4451042 Oven Thermal Fuse

Repair (Con) man came to take money and hinted it was probably fuses that I already expected. He never showed back up so I researched online, found help forum here confirming suspicions and giving part numbers that I was able to find here on schematics and then on my equipment allowing me to test the components. I had a single fuse blown that cost less than $30 shipped to the house. Saved me a few thousand dollars for my trouble. Insurance company wanted to replace the oven paying only $667 for a double oven that cost $2200 for the cheapest at Lowe's. So this site and its pages saved my bacon!! 

I was able to get power to the panel. Replaced the fuse PSE wanted $163 to come to the house. The fuse cost $22. Fuse was exact replacement part in a 23 year old wall oven. 

Sent mainboard to Circuit Board Pros for repair. Installed main board after repair and display still not working. They sent me troubleshooting steps and determined that the thermal fuse was blown. Ordered the fuse from AppliancePartsPros.com. Installed fuse and with the main board repair and new fuse oven is as good as new. 

I ordered the part and got it in 5 days.replaced the thermal fuse which fixed the issue. thanks 

So a double oven enclosed in a cabinet or wall tends to heat and clean very very hot, which in turn overheats the thermal fuse and thermostat relay I believe it’s called. About the third time, this has happened after self-cleaning. Pretty easy diagnosis if you have even a cheap analog multimeter that I have. Anywhere wires connect to a relay, fuse or thermostat simply disconnect the wires and put your leads on each wire. If the needle doesn't move, that part is bad. Unfortunately, I have it down to a science and ordered the parts before we do the self-cleaning because I know this is going to happen. The best part is your company is so awesome I get the parts so quick, that we don’t miss a beat in the house. Thanks for the quick shipping and great website that helps diagnose any appliance issues I have. I will never order form any other place as long as you carry the parts I need. 

Not sure which fuse might be bad, I ordered all three. The oven is almost twenty years old, so I figured it couldn't hurt to replace them all. The breakers marked oven were tripped, so we figured everything was off. Wrong! The 220 and the 120 are separate breakers. We found this out the old fashioned way, we got shocked. Anyway, the fix is pretty simple. Take off decorative trim. Only one screw on each side holds it on. Remove four screws securing oven to cabinet, and slide oven out. Our oven was hard wired, so I couldn't unplug it, hence the shock. Removed two back cover plates, which exposes all the wiring except for the Oven Thermal Fuse, which resides behind the control panel on the top front of the oven. Six screws to remove it. Remove screws,unplug Fuses and Thermal Overload, plug in new ones, replace all screws, slide back into place, after checking to make sure oven works, put everything back in place, and you are done. Less than an hour to do everything. 

Removed $ Replaced fuse. 

Googled thermal fuse for our oven and found the correct part at your store. Replaced thermal fuse which supplies 110V to front panel. Hardest part of repair was finding how to remove cowling to access the control panel. 

Read the forum on the site and found others who had the exact same problem. This made the diagnosis easy and the fix was shown with good detail. Ordered the parts and had the oven back up and running in an hour. This is the second time AppliancePartsPros has saved me money and time. Highly Recommended! 

I called the appliance technician, he discovered the Control Panel Thermal Fuse was bad. The appliance company could not locate the part and offered to install a new oven for $1200. I found the Thermal Fuse on your website, ordered it, and it was delivered the very next day. I installed the fuse myself (after securing the power source), and my oven is baking cookies again.