{"product_id":"icp-control-board-kit-for-rhh048s0xa0aaaa-oem-heat-pump-defrost-board-ships-today","title":"ICP Control Board Kit for RHH048S0XA0AAAA — OEM Heat Pump Defrost Board | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control board kit (part number 1183618, KIT CONTROL BOARD) is the electronic brain of the ICP \/ Tempstar \/ Heil RHH048S0XA0AAAA 4-ton heat pump. The board manages defrost timing and termination, anti-short-cycle delays, reversing valve and contactor energizing, and the condenser fan and compressor sequencing in response to thermostat and sensor inputs. Supplied as a complete kit with the hardware and connectors needed for a clean swap. When the board fails, the heat pump may not start, may stay locked in defrost, ice over the outdoor coil, fail to switch between heat and cool, or trip on safety lockouts. Replacing a failed board restores correct timing and sequencing across the entire system.\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\u003eHeat Pump Defrost \/ Control Board Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24 Volt\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\u003eSupplied As\u003c\/td\u003e\n\u003ctd\u003eComplete Replacement Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eBuilt for the RHH048S0XA0AAAA heat pump and matching ICP-family Tempstar, Heil, and Comfortmaker heat pumps that use this control board kit. Match your existing board part number or kit reference before ordering, as control 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 before touching the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to reach the control box and board mount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness, plug, and sensor connection before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harnesses, release the board standoffs or screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board from the kit, transfer connections one at a time per your photo, and set any jumpers or defrost timing to match the original.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run heat and cool modes, and confirm normal sequencing and defrost operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHeat pump won't start or randomly shuts down\u003c\/li\u003e\n\u003cli\u003eOutdoor coil ices over or unit stuck in defrost\u003c\/li\u003e\n\u003cli\u003eNo switching between heating and cooling\u003c\/li\u003e\n\u003cli\u003eBurn marks, swollen components, or relay clicking with no output\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":63027264684403,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047480738163,"sku":"1183618-GEN","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-defrost-1183618_8c92c887-fc16-4400-9d4b-75d93fdc3ea5.jpg?v=1782885985","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-kit-for-rhh048s0xa0aaaa-oem-heat-pump-defrost-board-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}