I've had this range for about 10 years now and has been working great until a few days ago the oven temp got way to hot and burned my wife's cookies she was baking. She pushed bake, set temp to 350 and oven started at 175. I checked the temp in oven and it showed way above 500 degrees. I shut it off. I then let it cool down to normal.
That same day, I did another test, pushed bake, set temp to 350, then start. This time oven started at 100, and gradually reached 350, oven then beeped 5 times to let me know it had reached 350. However, the temp kept rising and went above 500 until I shut it off.I did this test several more times that day with the same results. My question is what parts do I need for this LG, Model # LRE30453SW/01. Thank you so much.