{"product_id":"icp-defrost-control-board-for-yl042gb1-heat-pump-timer-board-ships-today-1","title":"ICP Defrost Control Board for YL042GB1 — Heat Pump Timer Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM defrost control board (ICP part #1069364) is the brain of the outdoor defrost cycle on your ICP \/ Tempstar \/ Heil YL042GB1 heat pump. It monitors the defrost thermostat and ambient conditions, times the defrost interval, energizes the reversing valve, and shuts the outdoor fan off so the coil can shed ice in cold weather. A failed board is a common cause of a heat pump that ices over solid in winter, never defrosts, defrosts constantly, or won't switch the reversing valve. Replacing the board restores proper defrost timing and protects the coil and compressor.\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 (Heat Pump)\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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eDefrost timing, reversing valve \u0026amp; outdoor fan control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\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 for the ICP \/ Tempstar \/ Heil YL042GB1 heat pump and related ICP-family outdoor units using this defrost board. Match the part number and connector layout to your existing board before ordering.\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 with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser service panel to reach the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every plug and wire on the board, noting connector positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harnesses, release the standoffs\/screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new board on its standoffs and reconnect each harness exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run heating, and verify normal operation and a clean defrost cycle.\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 defrosts.\u003c\/li\u003e\n\u003cli\u003eUnit defrosts too often or stays in defrost.\u003c\/li\u003e\n\u003cli\u003eReversing valve or outdoor fan not controlled correctly during defrost.\u003c\/li\u003e\n\u003cli\u003eVisible burnt traces, scorched relays, or no board activity.\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":63027186794867,"sku":"1069364","price":181.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047507575155,"sku":"1069364-GEN","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1069364_b8ca31e2-cc63-42c4-954e-ac2f02d5c7a3.jpg?v=1782887402","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-for-yl042gb1-heat-pump-timer-board-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}