{"product_id":"tempstar-comfort-alert-control-board-for-t4a318gkf101-diagnostic-module-ships-today","title":"Tempstar Comfort Alert Control Board for T4A318GKF101 — Diagnostic Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM Comfort Alert control board (part number 1177402) for the Tempstar T4A318GKF101 condensing unit. The Comfort Alert module is a compressor diagnostic and protection board that monitors the compressor and control circuit, flashing fault codes through its onboard LED to identify problems such as locked rotor, open circuit, low or high pressure, missing phase, and short cycling. It protects the compressor and gives technicians a fast read on what's failing. Symptoms of a failed board include no diagnostic codes, a compressor that won't run or cycles erratically, a board LED that is dark or stuck flashing, and nuisance lockouts with no actual fault present.\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 Compressor Diagnostic Control Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCompressor monitoring \u0026amp; LED fault-code 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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirectly fits the Tempstar T4A318GKF101 air conditioner and other ICP-family (Tempstar, Heil, Comfortmaker) units equipped with a Comfort Alert diagnostic module. Confirm the OEM 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 disconnect and breaker, then verify zero voltage with a multimeter before touching the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser service panel to reach the control compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every low-voltage lead and terminal connection before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring, release the board standoffs or screws, and lift out the old module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board on the same 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 the LED reports a 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\u003eDiagnostic LED is dark or frozen on one code\u003c\/li\u003e\n\u003cli\u003eCompressor will not start or short cycles with no real fault\u003c\/li\u003e\n\u003cli\u003eNuisance lockouts that clear only on a power reset\u003c\/li\u003e\n\u003cli\u003eNo fault codes during a known compressor or pressure problem\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":63021813399923,"sku":"1177402-GEN","price":164.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048414921075,"sku":"1177402","price":214.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1177402_0c2e7bb3-12bd-40c7-84ba-3a74d362142e.jpg?v=1782958662","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-comfort-alert-control-board-for-t4a318gkf101-diagnostic-module-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}