{"product_id":"icp-40va-transformer-for-wpg3304060lkc1-208-230v-to-24v-ships-today-1","title":"ICP 40VA Transformer for WPG3304060LKC1 — 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine ICP control transformer (OEM 1173691, supplied with terminal barrier 1178431) steps the incoming 208\/230V line voltage down to the 24V control power that runs the thermostat, control board, gas valve, contactor coil, and safety circuits on your ICP \/ Tempstar \/ Heil WPG3304060LKC1 package gas-electric unit. Rated at 40VA, it delivers the steady low-voltage supply the entire control system depends on. When a transformer fails — usually from a shorted low-voltage wire, a stuck contactor coil, or simple age — the unit goes completely dead with no thermostat display, no ignition, and no cooling. A blown internal fuse link, a buzzing or overheated transformer body, or measured 0V on the 24V secondary all point to replacement. The included 24V barrier keeps the secondary terminals safely separated and properly insulated.\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\u003eControl \/ Step-Down 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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM replacement for the ICP \/ Tempstar \/ Heil WPG3304060LKC1 package gas-electric unit and related WPG-series models that use the 1173691 40VA transformer with the 1178431 barrier. Verify your primary tap voltage (208 vs. 230) and the VA rating 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 unit and verify zero voltage with a multimeter on both line and low-voltage terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-area service panel to reach the transformer mounting plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every primary and secondary wire and the barrier placement 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 failed transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, fit the 24V barrier, and reconnect primary and secondary wiring exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V on the secondary, then verify the thermostat, board, and contactor energize normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnit is completely dead — no thermostat display, no ignition, no cooling\u003c\/li\u003e\n\u003cli\u003e0V measured on the 24V secondary with line voltage present\u003c\/li\u003e\n\u003cli\u003eTransformer body is buzzing, swollen, or hot to the touch\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse after a control short\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":"Direct Replacement","offer_id":63027222413683,"sku":"1178431-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047960854899,"sku":"1178431","price":45.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431_14ac17da-1bdf-4dcd-b6fa-5349da988547.jpg?v=1782883167","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpg3304060lkc1-208-230v-to-24v-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}