{"product_id":"icp-transformer-for-wja324000k000b1-40va-208-230v-to-24v-ships-today-1","title":"ICP Transformer for WJA324000K000B1 — 40VA 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control transformer kit fits the ICP\/Tempstar\/Heil WJA324000K000B1 unit and includes the 40VA step-down transformer (part #1173691) plus its 24V barrier\/insulator (part #1176032). The transformer reduces incoming 208\/230V line voltage to the 24V control voltage that powers the contactor coil, thermostat circuit, and low-voltage controls. The included 24V barrier safely isolates the low-voltage terminals from line voltage inside the control box. When a transformer fails — usually from a shorted thermostat wire, a stuck contactor drawing excess current, or simple age — the entire low-voltage control circuit goes dead: the contactor won't pull in, the thermostat loses power, and the system won't run. A 40VA transformer supplies ample capacity for the contactor and standard control loads on this unit.\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 (transformer), 1176032 (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\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\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWJA324000K000B1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for the ICP-family WJA324000K000B1 unit and other ICP, Tempstar, Heil, and Comfortmaker systems using a 208\/230V-to-24V 40VA control transformer. Confirm the primary voltage tap, secondary voltage, and VA rating match your existing transformer 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, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the unit's electrical access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary (line) and secondary (24V) wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the transformer leads, unfasten it from the cabinet, and remove the old barrier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and barrier, then reconnect primary and secondary wires per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary and proper contactor pull-in.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo 24V control voltage; thermostat screen is dead.\u003c\/li\u003e\n\u003cli\u003eContactor will not energize even though line voltage is present.\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visible scorching on the transformer body.\u003c\/li\u003e\n\u003cli\u003eBlown low-voltage fuse that recurs after reset.\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":63027235717491,"sku":"1176032","price":37.64,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047745208691,"sku":"1176032-GEN","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176032_af3aac39-5aab-4d0b-8d4c-e520d954df29.jpg?v=1782896602","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-wja324000k000b1-40va-208-230v-to-24v-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}