{"product_id":"icp-defrost-control-board-for-yj018ga3-heat-pump-defrost-timer-1069364-ships-today-1","title":"ICP Defrost Control Board for YJ018GA3 — Heat Pump Defrost Timer 1069364 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM defrost control board (part number 1069364) for the ICP\/Tempstar\/Heil YJ018GA3 heat pump. The defrost board is the brain of the heat pump's defrost cycle: it monitors the outdoor coil temperature and compressor run time, then initiates a timed or demand defrost to clear ice from the outdoor coil during heating operation. It coordinates the reversing valve, outdoor fan motor, and supplemental heat to safely melt frost without overcooling the home. When this board fails, the heat pump can ice over solid, run constantly with poor heat output, or lock out entirely. Common failure causes include voltage spikes, corroded relays, burnt traces, and failed timing logic. This board operates on 24V control voltage and uses the standard defrost timer pin selections found across the ICP family.\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 \/ 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 Defrost Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM Direct 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\u003eEngineered as a direct OEM replacement for the ICP\/Tempstar\/Heil YJ018GA3 heat pump condensing unit, and shared across many ICP-family heat pumps that originally used board 1069364. Always confirm the printed part number on 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 at the board's line terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the outdoor unit's control panel access cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and the defrost timing pin position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and unplug the low-voltage and line connectors, then unscrew the old board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1069364 board, set the defrost timer pin to match the original, and reconnect every wire per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and force a defrost cycle to confirm the reversing valve, fan shutdown, and timing all 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 and never clears during heating.\u003c\/li\u003e\n\u003cli\u003eHeat pump won't enter or exit defrost, or defrosts far too often.\u003c\/li\u003e\n\u003cli\u003eNo 24V output to the reversing valve or outdoor fan during the cycle.\u003c\/li\u003e\n\u003cli\u003eVisible burnt relays, scorched traces, or a board that won't power up.\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":63027191021939,"sku":"1069364","price":184.6,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047503905139,"sku":"1069364-GEN","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1069364_e36bd677-34f7-4272-a1c9-289314c08d6b.jpg?v=1782887076","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-for-yj018ga3-heat-pump-defrost-timer-1069364-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}