Stove won't self clean in San Jose, CA

Issue description:

Oven self-cleaning is a series of technologies that allow you to get rid of contamination after cooking with minimal human intervention. These include catalytic cleaning, pyrolysis and steam cleaning. Self-cleaning ovens free the hostess from titanic labor, but each of the cleaning methods is effective to a different degree.

The most effective is the pyrolytic self-cleaning of the oven, which burns food contamination in the entire chamber at a temperature of 480-500 ° C. The cleaning process is started manually when the oven is empty and can take about two hours.

But what to do if the oven is empty - all baking sheets and guides are removed. However, when starting the self-cleaning function, the oven beeps. According to the instructions, this means that not all attachments have been removed. But there is nothing else left - the oven is completely empty. What could be the catch? The most likely cause is a problem with the sensor that monitors the presence of dishes and trays in the oven. He either fused alone, or got dirty, or completely out of order