{"product_id":"icp-fan-coil-control-board-for-waht604a1-oem-replacement-ships-today","title":"ICP Fan Coil Control Board for WAHT604A1 — OEM Replacement | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM fan coil control board (part number 1172975) for the ICP \/ Tempstar \/ Heil WAHT604A1 air handler. The control board is the brain of the fan coil unit — it manages the blower motor, processes thermostat demands, sequences electric heat staging, and protects the low-voltage circuit. When the board fails, the symptoms range from a blower that won't start or won't stop, to no response from the thermostat, to electric heat that won't engage. Boards commonly fail from voltage surges, lightning, overheating, corroded relays, or burnt traces around the relay terminals. A failed control board is a frequent cause of intermittent \"no heat\" and \"fan won't run\" service calls on these air handlers.\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\u003e1172975\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eFan Coil Control Board\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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eBlower \u0026amp; low-voltage control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWAHT604A1\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\u003eA direct OEM replacement for the ICP \/ Tempstar \/ Heil WAHT604A1 fan coil air handler and related ICP units built on this control platform. Confirm the 1172975 part number printed on your existing board before ordering for guaranteed fitment.\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 breaker and verify zero voltage with a multimeter; control boards are static-sensitive, so ground yourself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the air handler service panel to expose the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harnesses and low-voltage leads, then unscrew or unclip the board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board on the standoffs and reconnect every harness and lead exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, then verify blower operation on both fan-only and a heating\/cooling call.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor won't start, or runs continuously and won't shut off\u003c\/li\u003e\n\u003cli\u003eNo response to thermostat heat or cool calls\u003c\/li\u003e\n\u003cli\u003eElectric heat stages fail to energize\u003c\/li\u003e\n\u003cli\u003eVisible burnt traces, scorched relays, or a burnt smell 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":63021615874419,"sku":"1172975","price":194.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047521173875,"sku":"1172975-GEN","price":149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1172975_d4481039-abee-41d2-96a9-82ae0f15b57b.jpg?v=1782887951","url":"https:\/\/nationalhvacparts.com\/products\/icp-fan-coil-control-board-for-waht604a1-oem-replacement-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}