{"product_id":"icp-heat-pump-control-board-kit-for-rhh036h0ca0aaaa-24v-defrost-board-ships-today","title":"ICP Heat Pump Control Board Kit for RHH036H0CA0AAAA — 24V Defrost Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM control board kit (part #1183618) for the ICP \/ Tempstar \/ Heil RHH036H0CA0AAAA heat pump. The control board manages the defrost cycle, reversing valve switching, compressor staging, and 24V low-voltage communication between the thermostat and the outdoor unit. A failed board can leave the heat pump dead, stuck in defrost, unable to switch between heating and cooling, or short-cycling the compressor. Installing the exact OEM kit restores factory operation and protects the compressor and reversing valve from improper control sequencing.\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\u003e1183618 (KIT CONTROL BOARD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Defrost Control Board Kit\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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRHH036H0CA0AAAA\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\u003eEngineered as the factory replacement for the ICP RHH036H0CA0AAAA heat pump and shared across ICP-family brands including Tempstar, Heil, Comfortmaker, and Arcoaire units that use OEM control board kit 1183618. Confirm your existing board part number 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 outdoor disconnect and breaker, then verify zero voltage with a multimeter before touching the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control panel access cover on the outdoor unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position on the existing board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and unplug the low-voltage and line-voltage connectors, release the board standoffs\/mounting screws, and lift out the failed board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new OEM board kit on the same standoffs and reconnect every wire exactly per your photo and the kit instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify the unit energizes, runs in heating and cooling, and completes a normal 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\u003eHeat pump will not start or has no 24V control output.\u003c\/li\u003e\n\u003cli\u003eUnit stuck in defrost or never defrosts in cold weather.\u003c\/li\u003e\n\u003cli\u003eSystem fails to switch between heating and cooling modes.\u003c\/li\u003e\n\u003cli\u003eVisible burnt traces, scorched relays, or a melted connector on the board.\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":63027266486643,"sku":"1183618","price":193.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047603356019,"sku":"1183618-GEN","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1183618_9f3f5d34-d121-41af-91a4-c6d531a8a57f.jpg?v=1782891425","url":"https:\/\/nationalhvacparts.com\/products\/icp-heat-pump-control-board-kit-for-rhh036h0ca0aaaa-24v-defrost-board-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}