{"product_id":"icp-control-board-kit-for-rhs243l0ca0aaaa-heat-pump-oem-defrost-board-ships-today","title":"ICP Control Board Kit for RHS243L0CA0AAAA Heat Pump — OEM Defrost Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM control board kit (part 1183618) is the electronic brain of your ICP \/ Tempstar \/ Heil RHS243L0CA0AAAA heat pump. On a heat pump, the defrost control board manages the reversing valve, monitors the outdoor coil temperature, runs the defrost timing logic, and sequences the contactor and fan. When this board fails, the outdoor unit can stop responding to the thermostat, ice over in heating mode, or fail to switch between heating and cooling. The kit ships with the board and the mounting hardware needed for a clean drop-in replacement. Because it is a complete kit rather than a bare board, it includes the harness and standoffs required to land your existing wiring without splicing.\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\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1183618\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Board Kit (Defrost \/ Timer)\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 Condensing Unit\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, and Comfortmaker RHS243L0CA0AAAA heat pump. The RHS-series defrost board is shared across multiple outdoor models in this family. Verify the original board's part number or connector layout before installing.\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 condenser service\/control panel to reach the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every connector, plug, and wire color before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness connector, release the board from its standoffs or screws, and lift it out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board on the included hardware and reconnect every harness exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for heating and cooling, and verify defrost, reversing-valve switching, and fan operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOutdoor unit does not respond to the thermostat\u003c\/li\u003e\n\u003cli\u003eCoil ices over in heating mode (defrost not initiating)\u003c\/li\u003e\n\u003cli\u003eNo switching between heating and cooling modes\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, swollen relays, or scorching 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":63021836501363,"sku":"1183618","price":218.4,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047486505331,"sku":"1183618-GEN","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1183618_3e5bcb9d-97aa-4ed6-9bc0-28ddc8b342df.jpg?v=1782886193","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-kit-for-rhs243l0ca0aaaa-heat-pump-oem-defrost-board-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}