How I fixed an Instant Vortex Plus Air Fryer

Update 8/2/2024: I am going to throw out my hypothesis on why I think people have trouble with these fryers. The two main reason, I believe are: 1. The lack of good circulation of air. The thermal fuse is tripped by temperatures over 200 degrees C. Therefore, circulation of cooler air is essential to avoid tripping the thermal fuse. For sure move it away from the wall when in use to improve circulation. Anything that can be done to improve air circulation during prolonged use should help. 2. Not wiping it down after each use. I would take a wet cloth and heat it up in a microwave or dip it in a pan with hot water. Then wipe the inside of the fryer down with a hot or at least warm cloth. Especially, wipe down the face of the thermal fuse so it is clean and not building up grease or other unwanted substances that could cause it’s surface to become too hot or not allow the heat to dissipate from the thermal fuse. Do the above two things each time you use it and you might avoid tripping the thermal fuse. Be sure to unplug before working on your fryer. I first check the thermal fuse for continuity and found there was no continuity. After removing the thermofuse, I tested it again with it in my hands and now it had continuity. That was very weird! I had tested it for continuity several times, because I could see it was going to be really hard to remove it from the air fryer. See below on hints to remove the thermofuse. Once I found the thermofuse had continuity, I wondered if there was a way to see if the Air fryer’s display would come on without have to put everything back together. I put the bare minimum back together and sure enough, it did work. So I proceeded to put everything back together. To remove the thermofuse, which is hard. You basically have to undo several wires and take out many screws to get the top off. Once the top is off, you still have to remove the heating element, the fan and the inside top plate. Once the inside top plate is removed you can see the two screws holding the thermofuse on. 1st Hint: The nut holding the fan on is a left handed nut. To remove it you have to turn it clockwise instead of counter clockwise. 2nd Hint: The other electrical connections, like the small red and black wire to the circuit board, have a release button, so they will not come off of the post they are connected to unless you push in the release button. Brown and black wires to door switch have a release button. The other wire with the white thermo covering goes to a device called a thermistor. It is labeled JT-100K. Nothing was wrong with my thermistor. I think it is important after each use to clean the inside of the fryer so you do not bake the grease splatter onto the inside plates. I really think it is important to at least wipe off the Thermofuse and the thermistor so they can function properly. Good luck.