{"product_id":"icp-control-board-kit-for-rhh120s0ca0aaaa-heat-pump-defrost-control-ships-today","title":"ICP Control Board Kit for RHH120S0CA0AAAA – Heat Pump Defrost Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the OEM control board kit (OEM #1183618) for the ICP\/Tempstar\/Heil RHH120S0CA0AAAA heat pump. The control board is the brain of the outdoor unit: it manages the defrost cycle, sequences the compressor contactor and reversing valve, monitors timing and safety inputs, and switches the 24V loads that drive the system. When the board fails you may see the unit stuck in defrost, no defrost at all (ice build-up on the coil), the reversing valve never energizing, intermittent no-cool\/no-heat operation, or a completely unresponsive outdoor unit even with good thermostat voltage. Boards commonly fail from heat-cycled solder joints, blown traces after a power surge, or corroded relays.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Board Kit (Defrost \/ Sequencing)\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 Outdoor Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFactory replacement kit for the ICP\/Tempstar\/Heil RHH120S0CA0AAAA. Supplied as a complete kit so it includes the hardware needed to drop into the original board location. Confirm your unit's model and existing board part number before ordering, as control boards are model-specific.\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 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\/electrical panel to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph every wire, plug, and terminal on the old board before unplugging anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Disconnect all connectors and harnesses, then release the board from its standoffs or mounting screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new board, transfer any jumpers\/settings, and reconnect each harness to the matching terminal per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore power and verify the unit responds to a thermostat call and initiates a normal defrost test cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor coil ices over – no defrost cycle\u003c\/li\u003e\n\u003cli\u003eUnit stuck running in defrost or short-cycling\u003c\/li\u003e\n\u003cli\u003eReversing valve or contactor never energizes on a call\u003c\/li\u003e\n\u003cli\u003eUnresponsive outdoor unit with confirmed 24V at 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":63021928808819,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047482900851,"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-furnace-1183618_32aa680b-bf7f-4774-952c-b12cc0827b8c.jpg?v=1782886080","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-kit-for-rhh120s0ca0aaaa-heat-pump-defrost-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}