{"product_id":"icp-40va-transformer-for-wpg3604115rkc1-208-230v-to-24v-ships-today","title":"ICP 40VA Transformer for WPG3604115RKC1 — 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine ICP control transformer (OEM 1173691) steps line voltage of 208\/230V down to the 24V control voltage that powers your thermostat, control board, contactor coil, gas valve, and safety circuit. Rated at 40VA, it supplies enough current to drive the full low-voltage control train of the packaged unit. The kit pairs with the OEM 24V barrier\/cover (part 1178431) to keep the secondary connections safely insulated. When a transformer fails — typically from a shorted secondary, a stuck contactor coil, or age — the entire 24V control system goes dead: no thermostat response, no cooling, no heat. This is the exact OEM transformer fitted to the ICP \/ Tempstar \/ Heil WPG3604115RKC1.\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\u003eOEM Part 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\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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG3604115RKC1\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 packaged unit WPG3604115RKC1. Other ICP-family units (Comfortmaker, Arcoaire, KeepRite, Day \u0026amp; Night) use similar 40VA 208\/230-to-24V transformers, but confirm primary tap voltage and VA rating against OEM 1173691 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 disconnect or breaker and verify zero voltage with a multimeter on both line and load sides.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/electrical compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary leads and note which tap is in use before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the primary and secondary wires, then unbolt the old transformer from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, install the 24V barrier, and reconnect the leads to the matching taps per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary and normal thermostat\/contactor operation.\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 control voltage — thermostat and control board are completely unresponsive.\u003c\/li\u003e\n\u003cli\u003eBlown low-voltage fuse that re-blows after replacement.\u003c\/li\u003e\n\u003cli\u003eBurnt smell, melted casing, or discolored transformer windings.\u003c\/li\u003e\n\u003cli\u003eSystem will not start in heat or cool despite good line voltage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63021520552307,"sku":"1178431","price":37.64,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047388692851,"sku":"1178431-GEN","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431_c692ee83-cc0e-4b05-b9c0-3629104fe3ce.jpg?v=1782883273","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpg3604115rkc1-208-230v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}