Holding cabinet with closed-loop humidity control system and method for controlling humidity in a holding cabinet

A holding cabinet with a closed loop humidity control system comprising:

• a holding cabinet;
• an air temperature probe for measuring an air temperature within said holding cabinet;
• a humidity sensor for measuring a humidity within said holding cabinet;
• a heater for heating air within said holding cabinet to a predetermined temperature;
• an air fan for circulating said air and for introducing air from outside said holding cabinet;
• and
• a water pan for holding water within said holding cabinet.

A system for maintaining a relative humidity level in a cabinet, comprising:

• means for determining a relative humidity set point;
• means for activating a heater in a fluid pan;
• means for determining if a fluid is present in said fluid pan;
• means for measuring said relative humidity in said cabinet;
• and
• means for maintaining said relative humidity within a predetermined range.

A method for maintaining a relative humidity level in a cabinet, comprising:

• initializing a cabinet system;
• calibrating a slide vent motor;
• determining a desired relative humidity within the cabinet;
• determining a desired position for a slide vent;
• and
• positioning the slide vent in accordance with the determination.