{"product_id":"icp-defrost-control-board-for-yk030g2-heat-pump-module-ships-today-1","title":"ICP Defrost Control Board for YK030G2 — Heat Pump Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM defrost control board (part number 34332101) is the electronic brain that manages the defrost cycle on your ICP \/ Heil \/ Tempstar YK030G2 heat pump. It monitors the defrost thermostat and ambient conditions, then periodically reverses the unit to melt frost and ice off the outdoor coil so the system can keep extracting heat efficiently in cold weather. The board sequences the reversing valve, controls the compressor and outdoor fan during defrost, and energizes auxiliary heat at the right moments. When this board fails, the heat pump may ice over solid, blow cold air on a heat call, short-cycle, fail to enter or exit defrost, or stop responding to the thermostat entirely. Because it coordinates several high-cost components, a failing defrost board can masquerade as a much bigger problem — replacing the board is usually the correct, economical fix.\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\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, reversing valve \u0026amp; aux heat control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP (Heil \/ Tempstar \/ Comfortmaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eYK030G2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eA direct OEM replacement for the ICP YK030G2 heat pump and shared across compatible Heil, Tempstar, and Comfortmaker outdoor units using this defrost board. Match the existing board's part number and connector layout 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 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 control-box service panel on the condensing unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire, plug, and terminal on the existing board before unplugging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harness connectors and unscrew or unclip the old board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board and reconnect each plug and lead exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the heat pump heats normally and initiates\/terminates defrost 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 or frosts over and never defrosts\u003c\/li\u003e\n\u003cli\u003eHeat pump blows cold air on a call for heat\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or won't switch between heat and defrost\u003c\/li\u003e\n\u003cli\u003eNo response from the outdoor unit despite a thermostat call\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":63027188236659,"sku":"34332101","price":194.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047505674611,"sku":"34332101-GEN","price":149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-34332101_6c519fe3-7d1b-4ee6-bd6d-203b61f0a14c.jpg?v=1782887306","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-for-yk030g2-heat-pump-module-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}