{"product_id":"tempstar-defrost-control-board-for-t2h324gka200-oem-1173636-24v-heat-pump-ships-today","title":"Tempstar Defrost Control Board for T2H324GKA200 — OEM 1173636 24V Heat Pump | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM defrost control board (part number 1173636) for the Tempstar T2H324GKA200 heat pump. The defrost board is the brain of your heat pump's outdoor unit during heating season. It monitors coil temperature and run time, then commands the reversing valve and outdoor fan to run a defrost cycle that melts frost off the condenser coil. It also manages the 24V control signals to the compressor contactor and time-delay functions. When this board fails, your heat pump can ice over, lose heating capacity, short-cycle, or stop calling for defrost entirely.\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 (Heil \/ ICP \/ Comfortmaker family)\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\u003eFitment\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\u003eEngineered as a direct-fit replacement for the Tempstar T2H324GKA200 heat pump and other ICP-family condensing units that originally shipped with board 1173636. Because Tempstar, Heil, Comfortmaker, and other ICP brands share components, this board also services equivalent models across those lines. Always confirm the printed part number 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 at the board terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harnesses and sensor leads, then remove the board's mounting screws or standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1173636 board, then reconnect each harness and the defrost thermostat\/sensor exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, place the system in heating, and confirm a normal defrost cycle initiates and terminates correctly.\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 up and never clears during heating mode\u003c\/li\u003e\n\u003cli\u003eHeat pump won't switch into or out of defrost\u003c\/li\u003e\n\u003cli\u003eCompressor or outdoor fan short-cycles or won't energize\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, corrosion, or a blown relay on the existing board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns on uninstalled parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021822181747,"sku":"1173636-GEN","price":119.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048438776179,"sku":"1173636","price":155.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1173636_91cf8465-098c-49d5-9bb5-00e8d5648539.jpg?v=1782959622","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-defrost-control-board-for-t2h324gka200-oem-1173636-24v-heat-pump-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}