{"product_id":"lennox-p-n-620244-01-genuine-oem-heat-pump-defrost-control-board","title":"Lennox P\/N 620244-01 | 15D55 – Genuine OEM Heat Pump Defrost Control Board","description":"\u003ch1\u003e\u003cspan\u003eLennox P\/N 620244-01 – Genuine OEM Heat Pump Defrost Control Board\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eLennox 620244-01\u003c\/strong\u003e is a Genuine Original Equipment Manufacturer (OEM) defrost control board designed for precise management of the defrost cycle in Lennox, Armstrong, and Ducane residential heat pump systems. This microprocessor-based control is responsible for monitoring the outdoor coil temperature and compressor run time to determine when ice buildup needs to be removed. By efficiently switching the unit from heat pump mode to air conditioning mode (reversing the refrigerant flow) and activating supplemental heat, it ensures the outdoor coil remains clear for optimal heat transfer. \u003c\/p\u003e\n\u003cp\u003eAs an authentic OEM component (Catalog Number \u003cstrong\u003e103025-03\u003c\/strong\u003e), the 620244-01 features factory-programmed timing intervals (typically selectable at 30, 60, or 90 minutes) and specific sensor calibrations required for your unit's safety and efficiency. Replacing a failed board with a genuine Lennox part ensures the defrost termination temperature is reached accurately, preventing unnecessary energy waste or \"freeze-up\" conditions that can lead to expensive compressor damage. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features and Function:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDemand \u0026amp; Timed Defrost:\u003c\/strong\u003e Manages the essential transition between heating and defrost modes based on factory-set logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine OEM Reliability:\u003c\/strong\u003e Official Lennox replacement engineered for exact electrical compatibility and mounting hole alignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic LED Indicators:\u003c\/strong\u003e Features built-in status lights to assist technicians in identifying sensor faults or board errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Reversing Valve Control:\u003c\/strong\u003e Coordinates the reversing valve and outdoor fan motor operation during the defrost sequence. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Details and Key Specifications:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 620244-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog #:\u003c\/strong\u003e 103025-03\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Lennox\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Defrost Control Board\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 24 VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 50\/60 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming Intervals:\u003c\/strong\u003e Field-selectable (30, 60, 90 minutes)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e Standard spade terminals and multi-pin harness headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGross Shipping Weight:\u003c\/strong\u003e 0.8 LB \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e🛠️ HVAC Depot Pro Tip: The \"Sensor\" Trap\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore replacing your 620244-01 defrost board, always test the \u003cstrong\u003eoutdoor coil thermistor (sensor)\u003c\/strong\u003e. A very common \"false failure\" occurs when a sensor goes out of calibration or has a frayed wire, telling the board the coil is freezing when it isn't, or vice-versa. Use a multimeter to check the resistance (ohms) of the sensor against the manufacturer's temperature-resistance chart. If the sensor is bad, the new board won't fix the problem. Additionally, check for \"chattered\" contactor points, as electrical noise can sometimes scramble the logic on these sensitive microprocessors. \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe 620244-01 is a direct OEM replacement for the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM \u0026amp; Catalog Numbers:\u003c\/strong\u003e 620244-01, 103025-03, 103025-01, 103025-02, 62024401.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Cross:\u003c\/strong\u003e Hamilton Standard \/ Lennox 103025 Series.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eExtensive Model Compatibility List:\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eNote: Use 'CTRL+F' to search for your specific model:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLennox Elite \u0026amp; Merit Series:\u003c\/strong\u003e Found in many 13HPX, 14HPX, XP13, and XP14 heat pump models.\u003c\/li\u003e\n\u003cli\u003eEL16XP1-018-230A\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-024-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-030-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-036-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-042-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-048-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL16XP1-060-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eEL17XP1-018-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eKHB024H4\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eKHB036H4\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eKHB048H4\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eKHB060H4\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-018-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-024-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-030-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-036-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-042-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-048-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eML16XP1-060-230A\u003c\/span\u003e\u003cbr data-serialized-params=\"[]\" data-complete=\"true\"\u003e\u003cspan\u003eSPB048H4S4\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eXP16-036-230A \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eXP16-048-230\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAllied Air Brands:\u003c\/strong\u003e Compatible with Armstrong Air and Ducane 4HP13 and 4HP14 series heat pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecific Unit Matches:\u003c\/strong\u003e 13HPX-024-230, 14HPX-036-230, XP13-030-230-01, 4HP13B24P-1A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":52921258475883,"sku":"66255153769","price":284.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0922\/9683\/9531\/files\/15D55-1.jpg?v=1771365722","url":"https:\/\/tophvacparts.com\/products\/lennox-p-n-620244-01-genuine-oem-heat-pump-defrost-control-board","provider":"HVAC Parts and Equipment Depot Open To Homeowners and Contractors","version":"1.0","type":"link"}