{"product_id":"tempstar-defrost-control-board-for-t2h330gkd100-heat-pump-oem-board-ships-today","title":"Tempstar Defrost Control Board for T2H330GKD100 — Heat Pump OEM Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM defrost control board (Part No. 1173636) for the Tempstar T2H330GKD100 heat pump. The defrost board is the brain of the outdoor unit during heating season — it monitors the outdoor coil temperature and accumulated run time, then commands a defrost cycle to melt frost off the coil. During defrost it reverses the refrigerant flow via the reversing valve, shuts off the outdoor fan, and energizes auxiliary heat so the home stays comfortable. A failed board leaves the unit unable to defrost (coil ices over) or stuck in a cycle, causing poor heating, short cycling, or a completely dead outdoor unit.\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\u003eDescription\u003c\/td\u003e\n\u003ctd\u003eDefrost Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Defrost 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\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM 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\u003eFactory-correct replacement for the Tempstar T2H330GKD100 heat pump and matching ICP-family outdoor units built under the Heil, Comfortmaker, Arcoaire and Keeprite labels that use this defrost board platform. Match the OEM 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 disconnect and breaker. Verify zero voltage with a multimeter before handling the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire, plug and the defrost timing jumper position before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the wire harnesses and unscrew\/unclip the old board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, transfer the defrost timing pin to the same setting, and reconnect every harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a heating cycle, and verify the unit initiates and terminates a defrost cycle 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 over and never defrosts in heating mode\u003c\/li\u003e\n\u003cli\u003eUnit short cycles or gets stuck in continuous defrost\u003c\/li\u003e\n\u003cli\u003eNo auxiliary\/emergency heat staging during defrost\u003c\/li\u003e\n\u003cli\u003eDead outdoor unit with 24V present at the board\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":63021821690227,"sku":"1173636-GEN","price":129.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048439071091,"sku":"1173636","price":168.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1173636_5b8a73dd-5457-41a7-9314-ee0b67e8359f.jpg?v=1782959634","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-defrost-control-board-for-t2h330gkd100-heat-pump-oem-board-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}