{"product_id":"tempstar-comfortalert-control-board-for-txa648gka100-oem-diagnostic-module-ships-today","title":"Tempstar ComfortAlert Control Board for TXA648GKA100 — OEM Diagnostic Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM ComfortAlert control board (part #1177402) for the Tempstar TXA648GKA100 condensing unit. The ComfortAlert diagnostic module continuously monitors the compressor and its control circuit, watching for conditions like locked rotor, open circuit, low\/high voltage, short cycling, and missing run capacitor. It provides flash-code diagnostics through an LED so technicians can pinpoint faults quickly, and it protects the compressor from damaging operating conditions. When this board fails or its diagnostics misbehave, you may see a compressor that won't run, false fault codes, no diagnostic LED activity, or intermittent compressor lockouts. Installing the correct OEM board restores both compressor protection and accurate fault reporting.\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 Compressor Diagnostic Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\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\u003eCompressor monitoring \u0026amp; flash-code diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\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\u003eDirect OEM replacement for the Tempstar TXA648GKA100 outdoor unit. The same ComfortAlert module is used across related ICP \/ Heil \/ Comfortmaker condensers on the TXA platform. Confirm the part number 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 breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the outdoor unit's electrical service panel to expose the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all low-voltage and sensing connections before removing anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harnesses, release the board's mounting standoffs or screws, and lift out the old module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new ComfortAlert board, reseat each harness firmly per your photo, and confirm the LED is visible for diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for cooling, and verify the compressor starts and the diagnostic LED shows a normal status code.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor won't run despite a valid cooling call\u003c\/li\u003e\n\u003cli\u003eNo diagnostic LED activity or a dead board\u003c\/li\u003e\n\u003cli\u003eFalse or persistent fault \/ lockout codes\u003c\/li\u003e\n\u003cli\u003eIntermittent short cycling traced to the diagnostic module\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":63021626622323,"sku":"1177402-GEN","price":184.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048417968499,"sku":"1177402","price":240.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1177402_cbcb3301-403f-4fd2-9e4e-37fb3eabbf9e.jpg?v=1782958709","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-comfortalert-control-board-for-txa648gka100-oem-diagnostic-module-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}