{"product_id":"icp-transformer-40va-120-24v-for-wfsr080b048a1-furnace-control-power-ships-today","title":"ICP Transformer 40VA 120\/24V for WFSR080B048A1 — Furnace Control Power | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM control transformer (part number 1177217) steps the incoming 120V line voltage down to the 24V required by the low-voltage control circuit in your ICP\/Heil\/Tempstar WFSR080B048A1 furnace. Rated at 40VA, it supplies steady power to the thermostat, control board, gas valve, and relays. A failed transformer is one of the most common causes of a completely dead furnace — when it burns out, the thermostat goes blank and nothing energizes. Symptoms of failure include no 24V at the control board, a blown low-voltage fuse that keeps recurring, a buzzing or scorched transformer body, or intermittent operation when the unit warms up.\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\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 \/ Heil \/ Tempstar\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\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement for ICP, Heil, Tempstar, Comfortmaker, and Carrier-family gas furnaces using model WFSR080B048A1 and related WFSR-series air handlers and furnaces that call for a 40VA 120-to-24V transformer.\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 at the control board with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace service panel to expose the control area.\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 transformer leads, then unbolt or unclip the transformer from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, reconnect line voltage to the primary and 24V leads to the secondary exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary terminals and normal call-for-heat operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V reading at the control board or thermostat\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuses\u003c\/li\u003e\n\u003cli\u003eBuzzing, humming, or burnt smell from the transformer\u003c\/li\u003e\n\u003cli\u003eFurnace dead with no display at the thermostat\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":63021561905523,"sku":"1177217","price":37.64,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047724335475,"sku":"1177217-GEN","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1177217_2c3e3046-1c0e-47ef-9c50-91f5e535daab.jpg?v=1782896046","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-40va-120-24v-for-wfsr080b048a1-furnace-control-power-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}