{"product_id":"icp-40va-transformer-for-wpg4304060rkb1-208-230-to-24v-oem-1173691-ships-today","title":"ICP 40VA Transformer for WPG4304060RKB1 — 208\/230 to 24V OEM 1173691 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 40VA control transformer (part 1173691, with 24V barrier 1178431) is the direct-fit step-down transformer for the ICP\/Tempstar\/Heil WPG4304060RKB1 packaged unit. It converts incoming 208\/230V line power down to the 24V control voltage that powers the thermostat, control board, gas valve, and contactor coil. When the transformer fails or shorts, the entire low-voltage control circuit goes dead. Symptoms include a blank thermostat, no response on a call for heat or cool, and a blown low-voltage fuse on the control board.\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, 1178431\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\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\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG4304060RKB1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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 a factory replacement for the ICP\/Tempstar\/Heil WPG4304060RKB1 packaged system. Verify primary\/secondary voltages and VA rating against parts 1173691 \/ 1178431 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 disconnect and breaker; verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the leads, then unbolt the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, match the primary taps to your supply voltage, and reconnect 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 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 or unresponsive thermostat.\u003c\/li\u003e\n\u003cli\u003eNo 24V control voltage measured at the board.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage control fuse.\u003c\/li\u003e\n\u003cli\u003eSystem won't respond to any call for heat or cool.\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":63021514031475,"sku":"1178431-GEN","price":32.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047963836787,"sku":"1178431","price":41.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178431_30a0cb9f-c6da-4aba-9058-5c655d8f9307.jpg?v=1782883330","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wpg4304060rkb1-208-230-to-24v-oem-1173691-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}