{"product_id":"icp-defrost-control-board-for-yj048ga1-heat-pump-ships-today-1","title":"ICP Defrost Control Board for YJ048GA1 — Heat Pump | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM defrost control board (Part Number 1069364) for the ICP \/ Heil \/ Tempstar YJ048GA1 heat pump. The defrost board is the brain of the outdoor unit's heat-pump operation — it monitors the defrost thermostat and timer, energizes the reversing valve and compressor contactor, and periodically reverses the cycle to melt frost off the outdoor coil during heating. A failed board leaves the outdoor coil iced over, kills heating capacity, and can lock out the compressor entirely. Typical failure signs include the outdoor unit staying caked in ice during heat mode, no defrost cycle ever initiating, the unit failing to switch between heat and cool, or burnt relays and scorch marks on the board.\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\u003e1069364\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 (Heil \/ Tempstar \/ Comfortmaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eHeat-Pump Defrost Timing \u0026amp; Reversing Valve Control\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\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\/Heil\/Tempstar YJ048GA1 heat pump and related ICP-family outdoor units using this defrost board. Verify the original board 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 outdoor disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser\/heat-pump electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness, plug, and terminal on the existing board before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the connectors, release the board standoffs or screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new board on the standoffs and reconnect each harness to the matching terminal per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, initiate a defrost (or jumper the test pins per the board legend), and confirm the reversing valve and compressor respond 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 in heat mode and never defrosts.\u003c\/li\u003e\n\u003cli\u003eNo defrost cycle initiates regardless of outdoor temperature.\u003c\/li\u003e\n\u003cli\u003eUnit won't switch the reversing valve between heating and cooling.\u003c\/li\u003e\n\u003cli\u003eVisible burnt relays, melted connectors, or scorch marks on 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. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027189383539,"sku":"1069364","price":168.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047505052019,"sku":"1069364-GEN","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1069364_17743bf4-27c4-460f-b0f7-1c765f6cb899.jpg?v=1782887218","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-for-yj048ga1-heat-pump-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}