{"product_id":"icp-transformer-for-wpa4424000rka1-40va-208-230v-to-24v-ships-today-1","title":"ICP Transformer for WPA4424000RKA1 — 40VA 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control transformer (part number 1173691) steps the 208\/230V line voltage down to the 24V control voltage that powers the thermostat, contactor coil, and control board in your ICP WPA4424000RKA1 system. It is rated at 40VA, providing ample capacity for the unit's low-voltage circuit. The kit also includes the OEM terminal barrier (part number 1176148, 24V 42-60) that protects and organizes the secondary connections. A blown or shorted transformer is a classic cause of a completely dead control system — no thermostat display, no contactor pull-in, and no response to a cooling call — often triggered by a shorted thermostat wire or a failed downstream component.\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\u003eTransformer PN\u003c\/td\u003e\n\u003ctd\u003e1173691 — Trans 208\/230 \u0026gt; 24 40VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrier PN\u003c\/td\u003e\n\u003ctd\u003e1176148 — Barrier 24V 42-60\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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect-fit OEM replacement for the ICP\/Heil\/Tempstar\/Comfortmaker WPA4424000RKA1 and related units using a 40VA 208\/230-to-24V control transformer. Confirm primary voltage, VA rating, and mounting 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 at the transformer primary with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to reach the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary wiring and the barrier terminal layout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the leads, then 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 the 208\/230V primary and 24V secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V across the secondary and proper 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\u003eCompletely dead thermostat or control system with line voltage present.\u003c\/li\u003e\n\u003cli\u003eNo 24V reading across the secondary terminals.\u003c\/li\u003e\n\u003cli\u003eBurnt smell, scorching, or visible swelling on the transformer body.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse after the short is cleared.\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":"OEM","offer_id":63027226018163,"sku":"1176148","price":44.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047749468531,"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_f77a824f-d5cf-448d-b0f8-916c07f9b373.jpg?v=1782896707","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-wpa4424000rka1-40va-208-230v-to-24v-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}