{"product_id":"tempstar-defrost-control-board-for-t2h360gkd300-24v-heat-pump-ships-today","title":"Tempstar Defrost Control Board for T2H360GKD300 — 24V Heat Pump | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the OEM defrost control board (part number 1173636) for the Tempstar T2H360GKD300 heat pump. The defrost control board is the brain of the outdoor unit's heating cycle. It monitors coil temperature and run time, then initiates and terminates the defrost cycle to clear frost and ice from the outdoor coil so the system can keep pulling heat in cold weather. It also coordinates the reversing valve, compressor, and outdoor fan timing. When this 24V board fails, the unit may stop defrosting (icing over), defrost too often, run the auxiliary heat constantly, or fail to switch between heating and cooling. Replacing it with a genuine OEM board restores correct defrost timing and protects the compressor.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1173636\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDefrost Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Outdoor Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for the Tempstar T2H360GKD300 heat pump and other ICP-family outdoor units (Tempstar, Heil, Comfortmaker, Arcoaire) that originally shipped with part 1173636. Always confirm the part number printed on your existing board before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter before touching wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the outdoor unit's control panel cover to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and terminal on the existing board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the low-voltage and sensor leads, release the board's mounting standoffs\/screws, and lift out the old defrost board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1173636 board, reconnect each wire to match your photo, and seat the defrost thermostat\/sensor lead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, place the system in heating, and confirm a normal startup and a test defrost cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor coil ices over and the unit never goes into defrost\u003c\/li\u003e\n\u003cli\u003eUnit defrosts constantly or on too short a timer\u003c\/li\u003e\n\u003cli\u003eAuxiliary\/emergency heat runs nonstop\u003c\/li\u003e\n\u003cli\u003eNo switching between heating and cooling, or no compressor start\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021818773875,"sku":"1173636-GEN","price":159.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048440086899,"sku":"1173636","price":206.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1173636_bd0d9061-4a64-478c-87b3-c0e298024f55.jpg?v=1782959678","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-defrost-control-board-for-t2h360gkd300-24v-heat-pump-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}