Refrigerator - Frost Guard / Adaptive Defrost

Frost free refrigerators defrost automatically using either a time-based system or usage-based system. Some older refrigerator models defrost based on time, regardless of whether it is necessary. Most newer refrigerators defrost based on usage.

Adaptive Defrost (Frost Guard) Definition

Adaptive Defrost means that the refrigerator will only defrost as needed. It accounts for door openings and compressor run time to determine when it is necessary to defrost and how long the defrost cycle needs to run. If the refrigerator is not being frequently used (for example, your family is on vacation), it will not defrost as often.The Adaptive Defrost (Frost Guard) feature also utilizes a "Pre-Chill" function to lower the freezer temperature prior to the defrost cycle. This lowering of the freezer temperature allows the freezer to return to its set temperature point more quickly once the defrost cycle is complete. This amounts to minimal thawing and refreezing of foods during the defrost cycle, resulting in a reduction of freezer burn.