{"product_id":"icp-40va-transformer-for-vnk050f12b1-115v-to-24v-ships-today","title":"ICP 40VA Transformer for VNK050F12B1 — 115V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM transformer (part number 1011626) steps down 115-volt line voltage to the 24-volt control voltage required by your ICP VNK050F12B1 furnace control board, thermostat, gas valve, and igniter circuit. Rated at 40VA, it supplies stable low-voltage power to the entire control system. When a transformer fails, the furnace loses all 24V control power: the thermostat goes blank, the control board will not energize, and the system fails to start any heat call. Common causes of failure include a shorted secondary, a blown internal fuse link from a wiring short, or overheating from an overloaded control circuit.\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\u003e1011626\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\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e115V\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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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 ICP \/ Tempstar \/ Heil VNK050F12B1 gas furnace. This 115V-to-24V 40VA transformer is also used across many ICP-family furnace and air handler control platforms that call for OEM part 1011626. Always verify your existing transformer's primary and secondary voltage and VA rating against this unit 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-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary wire connections before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the 115V primary leads and 24V secondary leads, then unbolt the failed transformer from the control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, then reconnect the primary and secondary wiring exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, confirm 24V at the secondary with a multimeter, and verify the furnace responds to a heat call.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlank or dead thermostat with no 24V control power.\u003c\/li\u003e\n\u003cli\u003eFurnace control board completely unresponsive to a heat call.\u003c\/li\u003e\n\u003cli\u003eMeasured 0V or low voltage at the transformer secondary terminals.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse or a burnt-smelling, discolored transformer.\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. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"Direct Replacement","offer_id":63021623574899,"sku":"1011626-GEN","price":28.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047952466291,"sku":"1011626","price":37.63,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1011626_8041ac19-bbc7-4590-8d15-a02aef4221b6.jpg?v=1782882491","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-vnk050f12b1-115v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}