{"product_id":"icp-40va-transformer-for-waxl484a3-208-230v-to-24v-ships-today","title":"ICP 40VA Transformer for WAXL484A3 – 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control transformer (part number 1172028) steps 208\/230V line voltage down to 24V at 40VA for the ICP\/Tempstar\/Heil WAXL484A3. The 24V output drives the thermostat, control board, relays, contactor coil, and gas valve that make up the low-voltage control circuit. When the transformer fails the system typically goes completely dead — no thermostat display, no blower, and no response on a heat or cool call. Typical causes are a shorted secondary circuit, age, or a power surge, and a control fuse that repeatedly blows is a telltale sign of a failing transformer.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003e1172028\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eStep-Down Control Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP (Tempstar \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e208\/230 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eLow-Voltage Control Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement control transformer for the ICP\/Tempstar\/Heil WAXL484A3. The same 1172028 transformer is used across many ICP-family WAXL and WAXM air handlers; verify the 208\/230V primary and 40VA rating against your existing unit before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e – Disconnect power at the breaker and verify zero voltage with a multimeter at both the line and 24V terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e – Remove the control panel service cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph the primary and secondary wire connections before disconnecting any leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Disconnect the primary and secondary wires, then unbolt or unclip the failed transformer from the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new transformer, reconnect the 208\/230V primary and 24V secondary leads per your photo, and confirm tight terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore power and verify 24V across the secondary and a normal thermostat response.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSystem completely dead with a blank thermostat\u003c\/li\u003e\n\u003cli\u003eNo 24V present at the secondary terminals\u003c\/li\u003e\n\u003cli\u003eLow-voltage fuse or breaker blows repeatedly\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visibly charred transformer windings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63021611221363,"sku":"1172028","price":33.8,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047377944947,"sku":"1172028-GEN","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172028_b9f024f4-44ad-42bd-b59c-8db12b55ce25.jpg?v=1782882586","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-waxl484a3-208-230v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}