{"product_id":"icp-transformer-for-wpg4364090rkb1-208-230v-to-24v-40va-ships-today","title":"ICP Transformer for WPG4364090RKB1 — 208\/230V to 24V 40VA | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM control transformer steps down 208\/230V line voltage to the 24V power required by your ICP WPG4364090RKB1 unit's control circuit, thermostat, contactor coil, and ignition control. Rated at 40VA, it supplies stable low-voltage power to the entire control system. When a transformer fails, the system goes completely dead at the low-voltage level — the thermostat screen goes blank, the contactor will not pull in, and the unit will not respond to a call for cooling or heating. A burned-out transformer is often caused by a shorted thermostat wire, a failed contactor coil, or a low-voltage short to ground. This kit includes the 24V transformer (1173691) and the matching mounting barrier (1178431) for a complete, correct replacement.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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 (barrier)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl 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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned as a direct-fit replacement for the ICP\/Tempstar\/Heil WPG4364090RKB1 packaged unit. The 40VA 208\/230-to-24V transformer is also used across many ICP-family condensing units and package units sharing the same control platform. Always confirm your existing transformer's VA rating and voltage taps before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the unit's electrical control panel cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary wire connections before disconnecting anything.\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 and barrier from the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and barrier, then reconnect the primary to the correct 208 or 230 tap and the secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V across the secondary terminals and a normal call for cooling.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V power — blank thermostat and dead control circuit\u003c\/li\u003e\n\u003cli\u003eContactor will not energize even on a cooling call\u003c\/li\u003e\n\u003cli\u003eVisible scorching, melted housing, or a burnt smell at the transformer\u003c\/li\u003e\n\u003cli\u003eBlown low-voltage fuse that re-blows immediately after replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021509607795,"sku":"WPG4364090RKB1","price":41.6,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047753236851,"sku":"WPG4364090RKB1-GEN","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-WPG4364090RKB1.jpg?v=1782896846","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-wpg4364090rkb1-208-230v-to-24v-40va-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}