True 831939 - FM1/STUZ Defrost Timer by Grasslin for TAC-48

Image of the True 831939 defrost timer manufactured by Grasslin (FM1/STUZ)
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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Free Compatibility Check:

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.
If you leave these fields blank, you waive this service & accept responsibility for your part choice. All sales are final if we do not ensure compatibility.
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Manufacturer #


The True 831939 defrost timer is commonly used on TAC-48 and TAC-48GS refrigerator units. The 831939 is rated at 220 volts.

  • True Part Number: 831939
  • Manufacturer: Grasslin
  • Manufacturer Model Number: FM1/STUZ
  • Voltage: 220 volts