{"product_id":"tempstar-defrost-control-board-for-t4h560gkb100-heat-pump-ships-today","title":"Tempstar Defrost Control Board for T4H560GKB100 — Heat Pump | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the genuine OEM defrost control board for the Tempstar T4H560GKB100 heat pump. The defrost board monitors outdoor coil temperature and run time, then commands the reversing valve and a fan shutdown to melt frost from the outdoor coil during heating season. When the board fails, the unit may ice over, run inefficiently, short-cycle, or stop heating entirely. Replacing it with the correct OEM defrost board (1173636) restores proper defrost timing and heat pump performance.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003eOEM Part 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\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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eDefrost timing \u0026amp; reversing valve control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT4H560GKB100\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\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect-fit replacement for the Tempstar T4H560GKB100 heat pump and equivalent ICP \/ Heil \/ Comfortmaker units using this defrost control board. Match the OEM number 1173636 and connector layout to your existing board before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the outdoor unit's control\/electrical panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every connector, the defrost sensor lead, and the timing pin\/jumper setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all connectors and remove the board's mounting screws or standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, set the defrost timer pin to match the original, and reconnect each plug per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and initiate a defrost test (per service instructions) to confirm proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOutdoor coil ices up and never defrosts in heating mode\u003c\/li\u003e\n\u003cli\u003eHeat pump short-cycles or won't run in defrost\u003c\/li\u003e\n\u003cli\u003eNo reversing valve or fan response during defrost\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, corrosion, or relay failure on the board\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021781811571,"sku":"1173636-GEN","price":168.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048446968179,"sku":"1173636","price":218.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1173636_9ab1a2e1-febc-46b3-b5b9-40277bc10737.jpg?v=1782959917","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-defrost-control-board-for-t4h560gkb100-heat-pump-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}