True 831971 - M-182-013-66332 - Defrost Timer by Invensys

Product Code

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90 Day Manufacturer Warranty! True warranties this part for 90 days from date of purchase to be free from material defects.


2.5 lbs
6 in
6 in
4 in


The True 831971 defrost timer by Invensys (M-182-013-66332) is designed to regulate the defrost cycle that prevents frost buildup on the evaporator coils. Frost can act like an insulator around the evaporator coils and prevent them from absorbing the heat in the cabinet. It is vital to the life of your unit, your refrigeration components, and the products stored inside of your unit that you replace the defrost timer when it fails to work properly. The True 831971 defrost timer manufactured by Invensys (M-182-013-66332) replaces the True 831921 on 208V models and the True 831912 on 115V models. Feel free to call our customer service specialists to make sure that this is the right defrost timer for your unit.

  • True Part Number: 831971
  • Manufacturer: Invensys
  • Manufacturer Model Number: M-182-013-66332
  • Voltage: 120V
  • Hurtz: 60Hz
  • Amperage: 15A
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