{"product_id":"icp-control-board-for-wpa4484000rkb1-oem-1178001-circuit-board-ships-today-1","title":"ICP Control Board for WPA4484000RKB1 — OEM 1178001 Circuit Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control board (part #1178001) is the electronic brain of your ICP, Heil, or Tempstar WPA4484000RKB1 unit. It manages the control sequence — reading thermostat calls, sequencing the contactor and fan, handling timing\/anti-short-cycle delays, and coordinating safeties. When a control board fails, the unit may not respond to a cooling call, short-cycle, run erratically, or throw fault codes even though every other component is healthy. Replacing a failed board with the correct OEM part restores proper sequencing and protects the compressor and motor from improper operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003e1178001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eElectronic Control \/ Circuit Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar\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\u003eSequencing, timing, and safety control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM fit for the ICP\/Tempstar\/Heil WPA4484000RKB1 unit and related ICP-family equipment using control board #1178001. Match the part number exactly, as control boards are model-specific and not interchangeable across platforms.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\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 unit's electrical service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector on the existing board before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness, 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 every connector per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling, and verify correct startup sequence with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit unresponsive to thermostat calls despite control power\u003c\/li\u003e\n\u003cli\u003ePersistent fault codes or blinking diagnostic LED\u003c\/li\u003e\n\u003cli\u003eErratic operation or short-cycling\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, corrosion, or swollen components on the board\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63027225657715,"sku":"1178001","price":227.5,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047467303283,"sku":"1178001-GEN","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1178001_95c4d92a-0ea6-49f5-b7dc-13d74f35a992.jpg?v=1782885487","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-for-wpa4484000rkb1-oem-1178001-circuit-board-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}