{"product_id":"icp-defrost-control-board-kit-for-rhs240h0ca0aaaa-24v-ships-today","title":"ICP Defrost Control Board Kit for RHS240H0CA0AAAA — 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control board kit (part 1183618) is the electronic brain of the ICP \/ Heil \/ Tempstar RHS240H0CA0AAAA heat pump. The board manages the defrost cycle, sequences the compressor and condenser fan, switches the reversing valve between heating and cooling, and coordinates the 24V control signals coming from the thermostat. When this board fails, the entire outdoor unit can become unpredictable — the system may stop heating or cooling, get stuck in or never enter defrost, allow the coil to ice over, or short-cycle the compressor. The kit ships with the mounting hardware and connectors needed for a clean swap.\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\u003e1183618\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl \/ Defrost Board Kit\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\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eRHS240H0CA0AAAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement for the ICP RHS240H0CA0AAAA and the related Heil, Tempstar, and Comfortmaker heat pumps that share this platform. Confirm the original board part number before ordering, as defrost boards are model-specific.\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 control-box service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harnesses, release the 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 its standoffs and reconnect each harness exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify heating, cooling, and a manual or timed defrost cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit won't switch between heating and cooling\u003c\/li\u003e\n\u003cli\u003eOutdoor coil ices over (defrost not running)\u003c\/li\u003e\n\u003cli\u003eCompressor or fan short-cycles erratically\u003c\/li\u003e\n\u003cli\u003eNo response to thermostat calls despite good 24V power\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":63021838795123,"sku":"1183618","price":240.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047507706227,"sku":"1183618-GEN","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1183618_47c9c490-679f-45f4-82a0-8272bdd557f6.jpg?v=1782887412","url":"https:\/\/nationalhvacparts.com\/products\/icp-defrost-control-board-kit-for-rhs240h0ca0aaaa-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}