{"product_id":"5303918568-defrost-thermostat","title":"Frigidaire Refrigerator Defrost Thermostat 5303918568 – Fix a Fridge That Won't Defrost or Ices Over","description":"\u003cstyle\u003e\n.hero-banner{position:relative;background:linear-gradient(135deg,rgba(0,0,0,0.82) 60%,rgba(0,0,0,0.45) 100%),url('https:\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/4444444444444444.png?v=1777040489') center\/cover no-repeat;padding:36px 32px;border-radius:8px;margin:0 0 28px 0;color:#fff;}\n.hero-banner h2{margin:0 0 6px 0;font-size:1.55em;font-weight:900;letter-spacing:0.3px;}\n.hero-banner .label{display:inline-block;background:#c8a400;color:#000;font-size:0.72em;font-weight:800;text-transform:uppercase;letter-spacing:1px;padding:3px 10px;border-radius:3px;margin-bottom:12px;}\n.hero-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}\n.hero-specs span{background:rgba(255,255,255,0.13);border:1px solid rgba(255,255,255,0.25);border-radius:4px;padding:5px 13px;font-size:0.82em;font-weight:700;letter-spacing:0.3px;}\n.pro-tip{background:#1a1a2e;border-left:4px solid #c8a400;padding:16px 20px;border-radius:6px;margin:24px 0;color:#f0f0f0;font-size:0.95em;line-height:1.6;}\n.pro-tip strong{color:#c8a400;}\n.cpo-notice{background:#1a1a1a;border-left:4px solid #e0a800;padding:14px 18px;border-radius:4px;margin:0 0 24px 0;color:#f0f0f0;font-size:0.92em;}\n\u003c\/style\u003e\n\u003cdiv class=\"hero-banner\"\u003e\n\u003cdiv class=\"label\"\u003eGENUINE OEM REPLACEMENT PART\u003c\/div\u003e\n\u003ch2\u003e5303918568 – Fridge Icing Over or Not Defrosting? The Defrost Thermostat Has Failed.\u003c\/h2\u003e\n\u003cdiv class=\"hero-specs\"\u003e\n\u003cspan\u003ePart# 5303918568\u003c\/span\u003e \u003cspan\u003eReplaces AP2150145 · 216538600 · 5303918568\u003c\/span\u003e \u003cspan\u003eFrigidaire · Electrolux · Kenmore\u003c\/span\u003e \u003cspan\u003eDefrost Thermostat | OEM\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe defrost thermostat is a thermal cutout that monitors evaporator coil temperature during the defrost cycle. It allows current to flow to the defrost heater until the coils reach the cutout temperature, then opens the circuit to prevent overheating. When it fails open, the defrost heater never activates — frost and ice accumulate on the evaporator coils, blocking airflow and causing the refrigerator to warm up progressively. When it fails closed, the heater runs unchecked and can damage the evaporator. Part \u003cstrong\u003e5303918568\u003c\/strong\u003e is the genuine OEM defrost thermostat for compatible Frigidaire and Electrolux refrigerators.\u003c\/p\u003e\n\u003ch2\u003e⚠️ Symptoms This Part Fixes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy frost or ice buildup on the back wall of the freezer\u003c\/li\u003e\n\u003cli\u003eRefrigerator section warming up while freezer stays cold\u003c\/li\u003e\n\u003cli\u003eEvaporator coils completely iced over (visible when rear panel removed)\u003c\/li\u003e\n\u003cli\u003eDefrost cycle not running or running but not clearing ice\u003c\/li\u003e\n\u003cli\u003eWeak or no airflow from freezer vents\u003c\/li\u003e\n\u003cli\u003eRefrigerator running constantly but not maintaining temperature\u003c\/li\u003e\n\u003cli\u003eDefrost heater tests good but ice still accumulates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e✓ Part Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 5303918568\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-References:\u003c\/strong\u003e AP2150145, 216538600, 1115338, AH429655, EA429655, PS429655\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Defrost thermostat \/ thermal cutout — limits defrost heater operation to safe coil temperature range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Brands:\u003c\/strong\u003e Frigidaire, Electrolux, Kenmore, Gibson, Kelvinator, White-Westinghouse, Crosley\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Certified Pre-Owned (CPO) — genuine OEM pull, inspected before listing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e⚙️ Installation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkill Level:\u003c\/strong\u003e Intermediate — 30 to 45 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect power\u003c\/strong\u003e before starting\u003c\/li\u003e\n\u003cli\u003eRemove all freezer contents and shelving to access the rear panel\u003c\/li\u003e\n\u003cli\u003eRemove the rear freezer panel (typically 4–6 screws) to expose the evaporator coils\u003c\/li\u003e\n\u003cli\u003eIf coils are heavily iced, defrost completely before proceeding — use a hair dryer on low or allow to thaw naturally; do not use sharp tools\u003c\/li\u003e\n\u003cli\u003eLocate the defrost thermostat clipped to the evaporator coil — it will have two wire leads\u003c\/li\u003e\n\u003cli\u003eTest the old thermostat with a multimeter at room temperature: should show continuity (closed). No continuity = failed open.\u003c\/li\u003e\n\u003cli\u003eDisconnect the leads, unclip the old thermostat, and clip the new 5303918568 onto the coil in the same position\u003c\/li\u003e\n\u003cli\u003eReconnect leads, reinstall the rear panel, restore power, and run a manual defrost cycle to confirm operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e✓ Compatible Models\u003c\/h2\u003e\n\u003cp\u003eFits compatible Frigidaire, Electrolux, Kenmore, Gibson, Kelvinator, White-Westinghouse, and Crosley refrigerators. Contact us at \u003ca href=\"\/pages\/contact\"\u003expartsupply.com\/pages\/contact\u003c\/a\u003e with your full model number to confirm fit before ordering.\u003c\/p\u003e\n\u003cdiv class=\"pro-tip\"\u003e\n\u003cstrong\u003e💡 Pro Tip — Test All Three Defrost Components Before Ordering:\u003c\/strong\u003e\u003cbr\u003eThe defrost system has three parts that can cause identical symptoms: the defrost timer or control board, the defrost heater, and the defrost thermostat. Before replacing the thermostat, test the heater for continuity (open = replace heater first) and verify the defrost timer or board is initiating the cycle. Replacing the thermostat when the heater is the actual failure wastes a part. A 10-minute multimeter check on all three saves a second disassembly.\u003c\/div\u003e","brand":"XPart Supply Ltd.","offers":[{"title":"Default Title","offer_id":52611693281569,"sku":null,"price":107.86,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/7783\/2225\/files\/999999999999999999999999999999.webp?v=1773857631","url":"https:\/\/xpartsupply.com\/products\/5303918568-defrost-thermostat","provider":"XPart Supply Ltd.","version":"1.0","type":"link"}