{"product_id":"icp-transformer-208-230v-to-24v-40va-for-wpa4484000rkb1-oem-1173691-ships-today-1","title":"ICP Transformer 208\/230V to 24V 40VA for WPA4484000RKB1 — OEM 1173691 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control transformer (part #1173691) steps 208\/230V line power down to 24V to run the low-voltage control circuit on your ICP, Heil, or Tempstar WPA4484000RKB1 unit. Rated at 40VA, it powers the contactor coil, control board, and thermostat circuit. This listing ships with the matching 24V terminal barrier (part #1176148, 42-60) for a clean, code-correct connection. When a transformer fails, the entire 24V control system goes dead — no contactor pull-in, no fan, no cooling — even though high-voltage power is present. A fresh OEM transformer restores reliable control power.\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), 1176148 (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 \/ Heil \/ Tempstar\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\u003eDirect OEM fit for the ICP\/Tempstar\/Heil WPA4484000RKB1 unit and related ICP-family equipment using a 40VA, 208\/230V-to-24V control transformer. Verify primary\/secondary voltages and VA rating against your original 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 disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the unit's electrical service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary (line) and secondary (24V) wiring and barrier before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect all leads and unbolt the old 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 primary and secondary leads per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary terminals with a multimeter.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V control power; contactor won't pull in\u003c\/li\u003e\n\u003cli\u003eUnit has line voltage but is completely unresponsive\u003c\/li\u003e\n\u003cli\u003eBurned smell or scorched transformer housing\u003c\/li\u003e\n\u003cli\u003eNo measurable voltage across the secondary terminals\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":63027225624947,"sku":"1176148","price":44.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047723581811,"sku":"1176148-GEN","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176148_699d998c-76b1-4684-9ad3-987587bf51a3.jpg?v=1782896017","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-208-230v-to-24v-40va-for-wpa4484000rkb1-oem-1173691-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}