True 800315 - 37T21 Defrost Termination Switch by Therm-O-Disc

Image of the True 800315 defrost termination switch by Therm-O-Disc (37T21)
Important! - Please provide the serial number (i.e. 1-2345678) and model number (i.e. GDM-5, T-49, etc) for your unit in the comment section at time of checkout if you want us to confirm the part's compatibility with your unit. Both of these numbers are found on a tag generally located on the left interior wall of the cabinet. This video will help explain where to find this information.
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We offer a no cost compatibility check for parts purchased for True, Ice-O-Matic, and Vitamix equipment. If you are purchasing a part for one of the listed brands and fill out the compatibility check we will use the information you provide to verify that the part is correct after you check out. This free service typically adds a 1 day lead time to your order but ensures that you get the correct part.
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Defrost termination switches like the True 800315 by Therm-O-Disc (37T21) are an important part of the defrost system of your True unit. The defrost termination switch is mounted on the evaporator coil and controls the defrost cycle in response to the temperature of the coils. When the coils are cold the termination switch is closed. When the unit begins the defrost cycle, the coils are warmed which melts the ice on the coils. When a set temperature is reached, the defrost termination switch is opened, terminating the defrost cycle. The True 800315 defrost termination switch by Therm-O-Disc (37T21) features two 17" long wires, one red and one black, that have blue connectors on the ends.

  • True Part Number: 800315
  • Manufacturer: Therm-O-Disc
  • Manufacturer Model Number: 37T21
  • Wire Configuration: 2 Wires with Connectors
  • Wire Length: 17" long