{"product_id":"icp-defrost-control-board-for-yj024g2-heat-pump-oem-ships-today-1","title":"ICP Defrost Control Board for YJ024G2 — Heat Pump OEM | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM defrost control board (part number 34332101) manages the defrost cycle on your ICP YJ024G2 heat pump. During heating operation, ice accumulates on the outdoor coil; the board reads the coil temperature sensor and elapsed run time, then triggers a timed defrost cycle to melt that ice and restore heating efficiency. It sequences the reversing valve, compressor, outdoor fan, and auxiliary heat, and manages all 24V control timing for the routine. A failed board is a leading cause of poor heat-pump performance — when it stops working, the coil ices over and stays frozen, heating output collapses, the unit may short cycle, or it can lock into a continuous defrost. Replacing the board restores correct, automatic defrost timing.\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\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e34332101\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\u003eICP (Tempstar \/ 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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eYJ024G2\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 OEM replacement for the ICP \/ Tempstar \/ Heil YJ024G2 heat pump. The same defrost board services many comparable ICP-family and Comfortmaker heat-pump condensing units of the same generation. Confirm the original part number 34332101 and the terminal layout against your existing board before installing.\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 at the board with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condensing unit service panel to reach the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector, including the coil sensor and reversing valve leads, before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harnesses, release the standoffs or screws, and lift the old board out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, reconnect each harness and sensor exactly as photographed, and match any defrost-time jumper to the original setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and run a heating cycle; confirm normal operation and initiate a forced defrost to verify the cycle completes and clears.\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 clears in heating mode.\u003c\/li\u003e\n\u003cli\u003eWeak or no heat output in cold weather.\u003c\/li\u003e\n\u003cli\u003eUnit short cycles or gets stuck in continuous defrost.\u003c\/li\u003e\n\u003cli\u003eReversing valve or auxiliary heat fails to engage on schedule.\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":"ICP","offers":[{"title":"OEM","offer_id":63027190792563,"sku":"34332101","price":162.5,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047504036211,"sku":"34332101-GEN","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-34332101_4b3dafd3-56fd-4b15-93e0-818d2b4238a2.jpg?v=1782887094","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-for-yj024g2-heat-pump-oem-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}