{"product_id":"icp-40va-transformer-for-wpg4484130rka1-208-230v-to-24v-ships-today-1","title":"ICP 40VA Transformer for WPG4484130RKA1 — 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM 40VA control transformer (part number 1173691) with its mating 24V barrier\/cover (part number 1178431) for the ICP \/ Heil \/ Tempstar WPG4484130RKA1 packaged gas unit. The transformer steps the 208\/230V line voltage down to the 24V control voltage that powers the thermostat, control board, contactor coil, gas valve, and safety circuits. A 40VA rating provides the current needed to pull in the contactor and energize the gas valve at the same time. When the transformer fails, the entire low-voltage control system goes dead — even though high-voltage components still have power. Symptoms include a blank thermostat, no response to a heat or cool call, or a transformer that hums, overheats, or has a blown internal fuse link.\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1173691 (transformer), 1178431 (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 (Heil \/ Tempstar \/ Comfortmaker)\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement for the ICP \/ Heil \/ Tempstar WPG4484130RKA1 packaged gas system. The same 40VA step-down transformer is shared across many ICP-family Heil, Tempstar, Comfortmaker, and Arcoaire units. Confirm your primary tap matches your incoming line voltage (208V vs 230V) before wiring.\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 unit and verify zero voltage with a multimeter before touching wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to reach the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary leads before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line-voltage primary leads and the 24V secondary leads, then unbolt the old transformer from the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, install the barrier cover, and reconnect the primary tap matching your line voltage and the 24V secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, confirm 24V at the secondary, and verify the thermostat and controls respond.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBlank thermostat with confirmed high voltage to the unit.\u003c\/li\u003e\n\u003cli\u003eNo 24V output measured at the secondary terminals.\u003c\/li\u003e\n\u003cli\u003eTransformer hums loudly, overheats, or smells burnt.\u003c\/li\u003e\n\u003cli\u003eRepeated control fuse blowing traced to a shorted winding.\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. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"Direct Replacement","offer_id":63027207111027,"sku":"1178431-GEN","price":33.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047964787059,"sku":"1178431","price":42.9,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431_800be1f4-c9a6-49a5-b058-2bcb39058495.jpg?v=1782883430","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpg4484130rka1-208-230v-to-24v-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}