{"product_id":"icp-transformer-40va-120-24v-for-wfsr100c060a1-40va-ships-today","title":"ICP Transformer 40VA 120\/24V for WFSR100C060A1 — 40VA | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM 40VA control transformer (part number 1177217) for the ICP\/Tempstar\/Heil WFSR100C060A1 furnace. The transformer steps line voltage (120V) down to the 24V control voltage that powers the thermostat, gas valve, igniter circuit, and integrated control board. A 40VA rating supplies enough load capacity to drive multiple low-voltage components at once. When the transformer fails, the entire 24V control system loses power — the thermostat goes blank, the furnace will not answer a call for heat, and no ignition sequence begins. Typical failure causes include a shorted thermostat wire, a seized inducer or blower motor pulling excess current, or normal age-related winding breakdown. Many transformers include an internal thermal fuse or are protected by a board-mounted fuse; replacing a blown transformer without first correcting the underlying short will simply burn out the replacement.\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\u003e1177217\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl 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\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWFSR100C060A1\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 for the ICP \/ Tempstar \/ Heil WFSR100C060A1 furnace and shared across many ICP-family models that use the 1177217 control transformer. Confirm the existing transformer's VA rating and voltage taps match 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 furnace switch and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace blower\/control compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary (line) and secondary (24V) wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line and low-voltage 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 and match the 120V primary taps and 24V secondary leads exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V at the secondary and a normal call-for-heat sequence.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermostat is blank or unresponsive with line power present.\u003c\/li\u003e\n\u003cli\u003eNo 24V output measured at the secondary terminals.\u003c\/li\u003e\n\u003cli\u003eFurnace does not begin any heating sequence on a call for heat.\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visible scorching on the transformer housing.\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":"ICP","offers":[{"title":"OEM","offer_id":63021560594803,"sku":"1177217","price":41.6,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047724433779,"sku":"1177217-GEN","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1177217_ba9dcd72-8249-4ef4-9112-d21e151cf628.jpg?v=1782896050","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-40va-120-24v-for-wfsr100c060a1-40va-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}