{"product_id":"icp-transformer-for-waha30054a1-40va-208-230v-to-24v-ships-today","title":"ICP Transformer for WAHA30054A1 — 40VA 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM 40VA control transformer (OEM part #1173844) for the ICP \/ Tempstar \/ Heil model WAHA30054A1 air handler. The transformer steps down line voltage of 208\/230V on the primary side to 24V on the secondary side, supplying the low-voltage control circuit that powers the thermostat, relays, contactor coil, and control board. Without a healthy transformer, the entire 24V control system goes dead. Common failure symptoms include a completely unresponsive thermostat, no call for heating or cooling reaching the equipment, a tripped or blown low-voltage fuse, or a buzzing\/overheating transformer body. A shorted control wire or a failed component downstream will often take the transformer with it, so inspect the rest of the 24V circuit when replacing.\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\u003e1173844\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\u003e40VA\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\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered as a direct-fit replacement for ICP model WAHA30054A1 and shared across many ICP-family air handlers and furnaces sold under the Tempstar, Heil, Comfortmaker, and Arcoaire brands that use a 208\/230V to 24V 40VA control transformer. Always confirm the primary\/secondary voltage and VA rating against the unit being serviced.\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 service\/control panel to expose the transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Note the primary tap used (208 vs 230), disconnect the leads, and unbolt the old transformer from the mounting bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, land the primary leads on the matching voltage tap, and reconnect the 24V secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V (±10%) at the secondary and normal thermostat operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThermostat screen is blank and the system is completely unresponsive.\u003c\/li\u003e\n\u003cli\u003eNo 24V reading at the transformer secondary terminals.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse or breaker on the control circuit.\u003c\/li\u003e\n\u003cli\u003eTransformer is hot to the touch, buzzing, or has a burnt smell.\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":63021621346675,"sku":"1173844","price":35.04,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047728955763,"sku":"1173844-GEN","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1173844_4faa457e-be62-4261-91b2-78ce1b565baa.jpg?v=1782896187","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-waha30054a1-40va-208-230v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}