{"id":79693,"date":"2022-06-24T21:41:25","date_gmt":"2022-06-25T02:41:25","guid":{"rendered":"https:\/\/appliancemasters.com\/frg\/product\/5303918850-thermistor-kit\/"},"modified":"2026-05-08T09:53:36","modified_gmt":"2026-05-08T14:53:36","slug":"5303918850-thermistor-kit","status":"publish","type":"product","link":"https:\/\/appliancemasters.com\/frg\/product\/5303918850-thermistor-kit\/","title":{"rendered":"Frigidaire 5303918850 Refrigerator Defrost Thermister Thermostat Kit \u2013 OEM Replacement for Frost Issues"},"content":{"rendered":"

Long Description\u00a0<\/strong><\/h2>\n

The Frigidaire 5303918850 Defrost Thermostat Kit<\/strong> is an OEM replacement designed to correct frost buildup and cooling issues in many Frigidaire, Electrolux, Gibson, Kelvinator, and White\u2011Westinghouse refrigerators. When the defrost thermostat fails, the evaporator coils freeze over, restricting airflow and causing warm temperatures in the fresh\u2011food section.<\/p>\n

This kit includes the thermostat and wiring components needed to restore proper defrost cycling. Built to original manufacturer specifications, the 5303918850 ensures accurate temperature sensing, safe operation, and long\u2011term reliability. Ideal for technicians, property managers, and DIY repairers addressing common no\u2011cool or ice\u2011block problems.<\/p>\n

If your refrigerator is freezing up, running constantly, or warming unexpectedly, this thermostat kit is a proven fix.<\/p>\n

<\/div>\n

Key Features<\/strong><\/h2>\n
    \n
  • OEM replacement for 5303918850<\/strong><\/li>\n
  • Restores proper defrost cycle<\/strong> operation<\/li>\n
  • Prevents evaporator coil freeze\u2011ups<\/li>\n
  • Improves cooling performance and airflow<\/li>\n
  • Includes thermostat and wiring components<\/li>\n
  • Durable, temperature\u2011rated construction<\/li>\n
  • Compatible with multiple Frigidaire\u2011family brands<\/li>\n<\/ul>\n
    <\/div>\n

    Common Symptoms Repaired<\/strong><\/h2>\n
      \n
    • Frost buildup on evaporator coils<\/li>\n
    • Refrigerator not cooling properly<\/li>\n
    • Freezer cold but refrigerator warm<\/li>\n
    • Unit runs continuously<\/li>\n
    • Ice blocking airflow vents<\/li>\n<\/ul>\n
      <\/div>\n

      Compatible Brands<\/strong><\/h2>\n
        \n
      • Frigidaire<\/li>\n
      • Electrolux<\/li>\n
      • Gibson<\/li>\n
      • Kelvinator<\/li>\n
      • White\u2011Westinghouse<\/li>\n
      • Tappan<\/li>\n<\/ul>\n

        (I can generate a full model\u2011by\u2011model compatibility list if you want.)<\/em><\/p>\n

        <\/div>\n

        Technical Specifications<\/strong><\/h2>\n
          \n
        • Part Type: Defrost Thermostat Kit<\/li>\n
        • OEM Part Number: 5303918850<\/strong><\/li>\n
        • Function: Monitors evaporator temperature and triggers defrost cycle<\/li>\n
        • Temperature Rating: Factory\u2011set for Frigidaire specifications<\/li>\n
        • Installation: Wire\u2011lead thermostat with included connectors<\/li>\n<\/ul>\n
          <\/div>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          The Frigidaire 5303918850 Defrost Thermostat Kit restores proper defrost operation in compatible refrigerators. Prevents frost buildup, improves cooling performance, and ensures reliable temperature regulation.<\/p>\n","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[7268],"product_cat":[1381],"product_tag":[9217,9221,9223,9222,9218,8813,9220,9219],"class_list":["post-79693","product","type-product","status-publish","product_brand-frigidaire","product_cat-refrigerator-freezer-repair-parts","product_tag-5303918850-thermostat","product_tag-electrolux-thermostat-kit","product_tag-evaporator-freeze-up-repair","product_tag-fridge-not-cooling-fix","product_tag-frigidaire-defrost-thermostat-kit","product_tag-frigidaire-replacement-parts","product_tag-oem-5303918850","product_tag-refrigerator-defrost-repair","first","outofstock","taxable","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"\nFrigidaire 5303918850 Refrigerator Defrost Thermister Thermostat<\/title>\n<meta name=\"description\" content=\"The Frigidaire 5303918850 Defrost Thermostat Kit restores proper defrost operation in compatible refrigerators. 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