{"product_id":"icp-fan-coil-control-board-for-waht364a1-oem-1172975-ships-today","title":"ICP Fan Coil Control Board for WAHT364A1 — OEM 1172975 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM ICP fan coil control board (part number 1172975) is the brain of your WAHT364A1 air handler. It manages blower operation, sequences heating and cooling calls from the thermostat, controls the relays that power the indoor blower motor, and coordinates electric heat staging where equipped. When this board fails, the air handler may stop responding to thermostat demands entirely, run the blower continuously, fail to energize on a call, or behave erratically. Common failure signs include scorched or pitted relay contacts, blown onboard fuses, and visible burn marks on the PCB. Replacing the board with the correct OEM part restores reliable, code-compliant operation.\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 \/ Air Handler Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP (Tempstar \/ Heil \/ Comfortmaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eBlower \u0026amp; heat sequencing control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM direct 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 \/ Tempstar \/ Heil WAHT364A1 air handler. ICP shares this platform across its private-label brands, so this board also fits equivalent Comfortmaker and Heil fan coil units built on the same chassis. Always confirm the printed part number 1172975 against your existing board before installing.\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 at the board with a multimeter before touching any wiring.\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 remove the board mounting screws or standoffs and lift the old board out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board on the same standoffs and reconnect each wire exactly as photographed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify the blower energizes on a thermostat call for heat and cool.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower will not start on a thermostat call, or runs constantly and won't shut off\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, melted relays, or a burnt-electronics smell on the board\u003c\/li\u003e\n\u003cli\u003eBlown onboard fuse that keeps failing after replacement\u003c\/li\u003e\n\u003cli\u003eErratic or no response to heating\/cooling demands\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":63021616595315,"sku":"1172975","price":206.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047521075571,"sku":"1172975-GEN","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1172975_5ad98b65-658e-46f6-bf03-96830c8db43d.jpg?v=1782887944","url":"https:\/\/nationalhvacparts.com\/products\/icp-fan-coil-control-board-for-waht364a1-oem-1172975-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}