{"product_id":"tempstar-control-board-for-t4a336gka200-comfortalert-compressor-diagnostics-ships-today","title":"Tempstar Control Board for T4A336GKA200 — ComfortAlert Compressor Diagnostics | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM ComfortAlert control board (part number 1177402) is the diagnostic module that monitors and protects the compressor in your Tempstar T4A336GKA200 air conditioner. It continuously watches compressor and contactor operation, flashing fault codes via an onboard LED to identify issues such as long run cycles, low voltage, locked rotor, open circuit, and missing run capacitor — saving technicians significant diagnostic time. When this board fails, you may see the compressor failing to start, no fault codes when there should be, repeated nuisance lockouts, or a unit that ignores cooling calls entirely. Replacing the diagnostic board restores both compressor protection and clear troubleshooting feedback.\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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCompressor monitoring, fault-code diagnostics, protection\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\u003eT4A336GKA200\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 T4A336GKA200 condensing unit. The same ComfortAlert diagnostic module is shared across many ICP\/Heil\/Tempstar\/Comfortmaker single-stage air conditioners and heat pumps. Verify the existing module is a ComfortAlert diagnostic 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 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 control-box service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all low-voltage and sensing wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harness and unscrew or unclip the old 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 each connection exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, initiate a cooling call, and confirm the compressor runs and the LED reports normal status.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor will not start despite a valid cooling call\u003c\/li\u003e\n\u003cli\u003eNo diagnostic LED activity or stuck\/erratic fault codes\u003c\/li\u003e\n\u003cli\u003eRepeated nuisance lockouts with no underlying fault\u003c\/li\u003e\n\u003cli\u003eLoss of compressor protection or inconsistent operation\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":63021812187507,"sku":"1177402-GEN","price":168.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048436318579,"sku":"1177402","price":219.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1177402_59bbb4fa-ba02-46f7-894c-398c290220b3.jpg?v=1782959532","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-control-board-for-t4a336gka200-comfortalert-compressor-diagnostics-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}