Why doesn't my humidor heat up?

Why doesn't my humidor heat up?

1. What is the ambient temperature, set temperature, and temperature displayed on the display?
2. After setting the temperature, please wait for a few hours to see if the temperature can be raised? During this process, please do not open the door frequently.
3. Please set the temperature at a lower value (such as 62℉) to check whether the cooling function is working properly