{"product_id":"tempstar-control-board-for-t4a330gkd200-icp-comfortalert-diagnostic-board-1177402-ships-today","title":"Tempstar Control Board for T4A330GKD200 — ICP ComfortAlert Diagnostic Board #1177402 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM Tempstar ComfortAlert control board (part #1177402) is the diagnostic and control module for the T4A330GKD200 condensing unit. It manages compressor operation, monitors system faults, and flashes diagnostic codes that tell a technician exactly why the system is down — locked-rotor, low voltage, missing phase, short cycling, or open run capacitor. When this board fails, the outdoor unit will not start, runs erratically, or trips repeatedly. Operating on a 24V control signal, the ComfortAlert board is the brain of the condenser and is not field-repairable, so a failed board must be replaced as a unit.\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\u003e1177402\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eComfortAlert Diagnostic Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ 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\u003eT4A330GKD200\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\u003eDesigned as a direct OEM replacement for the Tempstar T4A330GKD200 condensing unit. The 1177402 ComfortAlert board is shared across many ICP-family condensers and heat pumps (Tempstar, Heil, Comfortmaker, Arcoaire). Always confirm the part number printed on your existing board 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 verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser control panel cover 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 low-voltage harness and line-voltage leads, release the board standoffs\/clips, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Snap the new board onto the standoffs and reconnect all harnesses exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, initiate a cooling call, and confirm normal compressor operation with no fault flashes on the diagnostic LED.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutdoor unit completely dead on a cooling call\u003c\/li\u003e\n\u003cli\u003eContinuous or erratic fault codes flashing on the board LED\u003c\/li\u003e\n\u003cli\u003eCompressor short-cycling or failing to energize\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, swollen capacitors, or scorching 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":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021812547955,"sku":"1177402-GEN","price":189.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048436154739,"sku":"1177402","price":245.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1177402_e355ef99-d272-4ba5-bf83-723a0ffbab34.jpg?v=1782959524","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-control-board-for-t4a330gkd200-icp-comfortalert-diagnostic-board-1177402-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}