{"product_id":"icp-transformer-for-wfmr090c048a1-40va-120-24v-ships-today","title":"ICP Transformer for WFMR090C048A1 — 40VA 120\/24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM low-voltage control transformer (part #1176944) for the ICP \/ Tempstar \/ Heil WFMR090C048A1 gas furnace. The transformer steps incoming 120V line voltage down to the 24V required to power the furnace control board, gas valve, thermostat, and other low-voltage components. A 40VA rating provides the current capacity needed to drive the control circuit and ignition sequence. When a transformer fails, the entire 24V control system goes dead — the furnace will not respond to thermostat calls, the control board shows no power, and nothing energizes. Common failure modes include an internal open winding, a shorted secondary from a wiring fault, or a popped internal fuse link after a control short.\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\u003e1176944\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\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered as a direct OEM replacement for the ICP Tempstar Heil WFMR090C048A1 furnace and other ICP-family models that use the same 40VA 120\/24V control transformer. Always verify your existing transformer's VA rating and primary\/secondary voltages 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 furnace switch and breaker; verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace blower or control compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the 120V primary leads and the 24V secondary leads, then unbolt the failed transformer from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, then reconnect the line and low-voltage leads exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V at the secondary and a normal ignition sequence.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V power to the control board or thermostat\u003c\/li\u003e\n\u003cli\u003eFurnace completely unresponsive to thermostat calls\u003c\/li\u003e\n\u003cli\u003eMeasured 0V on the secondary with 120V present on the primary\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visibly scorched transformer housing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day 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":63021566656883,"sku":"1176944","price":37.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047743668595,"sku":"1176944-GEN","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176944_321f4717-b08d-4ba6-8833-ba180c177baa.jpg?v=1782896560","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-wfmr090c048a1-40va-120-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}