{"product_id":"heil-40va-transformer-for-wpg3604130rkc1-208-230v-to-24v-w-barrier-ships-today","title":"Heil 40VA Transformer for WPG3604130RKC1 — 208\/230V to 24V w\/ Barrier | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM control transformer kit for the ICP\/Tempstar\/Heil model WPG3604130RKC1, including the 40VA transformer (Part No. 1173691) and its 24V terminal barrier (Part No. 1178431). The transformer steps the unit's 208\/230-volt primary line voltage down to the 24-volt secondary that powers the control board, thermostat, contactor coil, gas valve, and other low-voltage components. Rated at 40VA, it supplies enough capacity for the full low-voltage control circuit. When a transformer fails — usually from a shorted secondary wire or an overloaded control circuit — the entire 24V system goes dead. Symptoms include a blank thermostat, no response to heat or cool calls, a tripped low-voltage fuse, or a transformer that is hot, buzzing, or visibly burned.\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), 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 \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\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\/230 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\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 as the OEM replacement for ICP\/Tempstar\/Heil model WPG3604130RKC1. This 40VA 208\/230V-to-24V transformer is used across many furnaces, air handlers, and package units in the same brand family. Confirm the part number, VA rating, and primary voltage against your existing transformer before ordering.\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 breaker and unit disconnect, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the electrical\/control access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary wiring and barrier terminals before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line-voltage primary leads and 24V secondary leads, then unbolt the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and barrier, matching the primary tap to your supply voltage, and reconnect each lead per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify a steady 24 VAC at the secondary and normal thermostat and control operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlank thermostat and no 24V control power\u003c\/li\u003e\n\u003cli\u003eSystem won't respond to any heat or cool call\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse\u003c\/li\u003e\n\u003cli\u003eTransformer is buzzing, overheating, or visibly burned\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":63021520224627,"sku":"1178431","price":41.54,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047208960371,"sku":"1178431-GEN","price":31.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431.jpg?v=1782877373","url":"https:\/\/nationalhvacparts.com\/products\/heil-40va-transformer-for-wpg3604130rkc1-208-230v-to-24v-w-barrier-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}