{"product_id":"icp-40va-transformer-for-wpg4604130lka1-208-230v-to-24v-ships-today-1","title":"ICP 40VA Transformer for WPG4604130LKA1 — 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control transformer (part 1173691, \"Trans 208\/230\u0026gt;24 40VA\") supplies the 24V low-voltage power for the ICP Tempstar\/Heil WPG4604130LKA1 packaged unit, and includes the matching 24V barrier\/terminal component (part 1178431). It steps the unit's 208\/230V line voltage down to the 24V control circuit that runs the thermostat, control board, contactor coil, gas valve, and relays. When a transformer fails — often from a shorted control wire or a stuck contactor coil overloading it — the entire low-voltage system goes dead: no thermostat display, no cooling or heating call, and no contactor pull-in. A blown internal fuse, scorched windings, or a burnt smell are common indicators. This 40VA factory-spec replacement restores control power across the system.\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 Number\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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e208\/230V primary, 24V secondary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG4604130LKA1\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 WPG4604130LKA1 packaged gas\/electric unit and related WPG-series systems using a 40VA 208\/230-to-24V transformer. Verify primary voltage tap, VA rating, and secondary voltage against your existing part 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 and verify zero voltage with a multimeter at the transformer terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-panel service cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary wiring and the correct voltage tap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the leads, then unbolt the transformer and barrier from the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, land the primary on the matching voltage tap, and reconnect the 24V secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V at the secondary and normal thermostat\/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 with no low-voltage power.\u003c\/li\u003e\n\u003cli\u003eNo response to heating or cooling calls.\u003c\/li\u003e\n\u003cli\u003eContactor or gas valve will not energize.\u003c\/li\u003e\n\u003cli\u003eBurnt smell, scorched windings, or blown control fuse.\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":63027205767539,"sku":"1178431-GEN","price":31.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047964983667,"sku":"1178431","price":41.54,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431_fdc6d798-e91b-40ba-8e16-0d13f3c4cd7d.jpg?v=1782883449","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpg4604130lka1-208-230v-to-24v-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}