{"product_id":"tempstar-control-board-for-t4a330gkd300-comfort-alert-module-ships-today","title":"Tempstar Control Board for T4A330GKD300 — Comfort Alert Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM Comfort Alert control board (Tempstar part number 1177402) is the compressor diagnostic module for your Tempstar T4A330GKD300 condensing unit. It continuously monitors compressor voltage and current draw to detect faults — locked rotor, open circuit, low voltage, short cycling, and missing run capacitor — and flashes a coded LED so a technician can diagnose problems without tearing the unit apart. When this board fails or loses communication, you lose that protection and diagnostics, and in some configurations the compressor may not energize at all. Symptoms include a dark or stuck-flashing LED, repeated nuisance lockouts, or a compressor that won't run despite a good contactor and capacitor.\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\u003eComfort Alert 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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCompressor monitoring \/ fault diagnostics\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\u003eIndicators\u003c\/td\u003e\n\u003ctd\u003eLED flash-code fault status\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 a direct OEM replacement for the Tempstar T4A330GKD300 condensing unit. The 1177402 Comfort Alert module is used across compatible ICP-family condensers (Tempstar, Heil, Comfortmaker) — confirm your unit was originally equipped with a Comfort Alert 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 condenser unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every low-voltage and sensing lead landed on the board before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harness connectors, release the standoffs or screws, 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 each lead exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a cooling cycle, and confirm a steady\/normal LED status with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo LED activity or a permanently stuck fault flash code\u003c\/li\u003e\n\u003cli\u003eRepeated nuisance compressor lockouts with no underlying fault\u003c\/li\u003e\n\u003cli\u003eCompressor won't energize despite a good contactor and capacitor\u003c\/li\u003e\n\u003cli\u003eVisible burnt traces, swollen components, or a scorched 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":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021812449651,"sku":"1177402-GEN","price":184.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048436187507,"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_58a3991c-c611-4b16-8d29-0bd37b7a48c9.jpg?v=1782959527","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-control-board-for-t4a330gkd300-comfort-alert-module-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}