{"product_id":"tempstar-defrost-control-board-for-t2h336gkd200-24v-heat-pump-board-ships-today","title":"Tempstar Defrost Control Board for T2H336GKD200 — 24V Heat Pump Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM defrost control board (part number 1173636) manages the defrost cycle on your Tempstar T2H336GKD200 heat pump. During heating, frost accumulates on the outdoor coil; the board watches the defrost thermostat and a timed interval, then briefly reverses the system and stops the outdoor fan to clear the ice before resuming heat. It also sequences the reversing valve and compressor relay logic. A failed board leaves the unit either never defrosting — icing up and losing capacity — or trapped in a continuous defrost loop that blows cold air and wastes energy.\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\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement for the Tempstar T2H336GKD200 heat pump. The 1173636 defrost board is shared across many ICP-family heat pumps (Tempstar, Heil, Comfortmaker). Match the part number and connector layout to your existing board before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the disconnect and breaker; verify zero voltage at the board with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every connector, jumper, and timer pin setting on the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness, free the mounting standoffs or screws, and lift the board out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new board, set the defrost timer pin to match the original, and reconnect each harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a heating call, and confirm normal operation plus a clean forced-defrost cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOutdoor coil ices over and heating output drops\u003c\/li\u003e\n\u003cli\u003eUnit stuck in continuous defrost, blowing cold air\u003c\/li\u003e\n\u003cli\u003eDefrost cycle never initiates regardless of frost\u003c\/li\u003e\n\u003cli\u003eNo 24V output to the reversing valve or fan relay\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":63021820969331,"sku":"1173636-GEN","price":169.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048439333235,"sku":"1173636","price":219.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1173636_7d436381-978e-42ff-8cd9-3d58c1686150.jpg?v=1782959645","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-defrost-control-board-for-t2h336gkd200-24v-heat-pump-board-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}