Product Description WR51X10055 Defrost Heater Replaces Part Numbers: WR51X10030, AP3183311, PS303781, 914088, AH303781, EA303781, PS303781, WR51X10030; This defrost heaters prevent your fridge’s cooling coils from frosting over. It is rated at 725 watts and high heat capability. WR55X10025 Temperature Sensor Replaces Part Numbers: 914093, AP3185407, WR50X10027, WR50X10034, WR50X10055, WR50X10067, WR55X10025, WR55X10026, WR55X10027; This temperature sensor is used to sense the temperature in the cabinet. WR50X10068 Defrost Thermostat Replaces Part Numbers: WR50X10068, AP3884317, 1170024, AH1017716, EA1017716, PS1017716, WR50X10015, WR50X10017, WR50X10018, WR50X10028, WR50X10051, WR50X10052, WR50X10053, WR50X10054, WR50X10074, WR50X10075, WR50X10079 This defrost thermostat controls refrigerator temperatures to preven items from freezing. High Quality: This products are made with the highest quality materials tested by manufacturer to match and/or exceed specifications of OEM products. Fixes the Following Symptoms: Fridge section is too warm Freezer section is too warm Fridge section is too cold Freezer section is too cold Freezer isn’t defrosting Frost buildup NOTE: Please check your refrigerator first before ordering. Please Note: Any problem, please contact us firstly before opening case disputing! we will give you a good solutiin if our product has any problems. Easy Fix for a Broken Fridge Replacing parts can fix following problems: Freezer isn’t defrosting Freezer is too warm or too cold Fridge isn’t dispensing water Ice maker isn’t making ice Fridge is too warm or too cold Fridge runs too long Installation Tips Empty your freezer and unplug the refrigerator before starting the repair. Put the food in coolers or another fridge to keep it at a safe storage temperature for the duration of the repair. Helpful tools include a quarter-inch nut driver, a Philips head screwdriver, a Torx 15 driver, wire cutters, and 1 wire nut or crimp-on butt connector.