{"product_id":"icp-40va-transformer-for-wpa4424000rkb1-208-230v-to-24v-ships-today","title":"ICP 40VA Transformer for WPA4424000RKB1 — 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM control transformer (part number 1173691) with its matching terminal barrier (part number 1176148) is a 40VA step-down transformer that converts 208\/230V line power to the 24V control voltage used by the ICP\/Tempstar\/Heil model WPA4424000RKB1. Virtually every low-voltage component in the system — the contactor coil, control board, defrost board, and thermostat circuit — depends on this clean 24V supply. When a transformer fails, usually from a shorted secondary or a power surge, the entire control circuit goes dead: the thermostat screen may blank, the contactor will not pull in, and the unit will not respond to a call for cooling. The included 24V barrier (42-60) keeps the secondary terminals safely separated and properly mounted.\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1173691 (Transformer), 1176148 (24V Barrier)\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\/230V\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\u003eWPA4424000RKB1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eBuilt for the ICP, Tempstar, Heil, and Comfortmaker unit WPA4424000RKB1, and a direct OEM replacement for transformer 1173691 and barrier 1176148. Confirm the VA rating and primary\/secondary voltages match your existing transformer 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 disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the electrical-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary leads and their terminals before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line and 24V leads, then unbolt the failed transformer and barrier from the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and barrier, matching primary taps to your supply voltage and reconnecting per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V (24-28VAC) across the secondary terminals.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo 24V at the control board or thermostat (blank thermostat).\u003c\/li\u003e\n\u003cli\u003eContactor coil will not energize on a call for cooling.\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visible scorching on the transformer body.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse after a short is cleared.\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":63021537493363,"sku":"1176148","price":36.34,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047384236403,"sku":"1176148-GEN","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176148_373399ca-f3f0-4141-94cf-f94c7a63570a.jpg?v=1782883119","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpa4424000rkb1-208-230v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}