{"product_id":"icp-24v-transformer-for-wama36004a1-40va-control-transformer-ships-today","title":"ICP 24V Transformer for WAMA36004A1 — 40VA Control Transformer | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 24V control transformer (part 202300900212) is the factory replacement for the ICP\/Tempstar\/Heil WAMA36004A1. The transformer steps incoming line voltage down to the 24-volt control signal that powers the thermostat, contactor coil, control board, and safety circuit. Rated at 40VA, it supplies enough current to energize the unit's low-voltage controls. Transformers typically fail from a shorted thermostat wire or a stuck contactor pulling excess current; when one fails the whole system goes dead — no thermostat display, no call for cooling or heating, and often a blown control-board fuse.\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\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e202300900212\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\u003eSecondary Output\u003c\/td\u003e\n\u003ctd\u003e24 VAC\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\u003c\/td\u003e\n\u003ctd\u003eLine voltage (per unit tap)\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 OEM fit for the ICP\/Tempstar\/Heil WAMA36004A1 and shared across many ICP-family units using a 40VA control circuit. Confirm the VA rating and primary voltage tap on your existing transformer before ordering.\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 breaker and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to reach the control compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary (line) and secondary (24V) wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the leads, unbolt the transformer from its bracket, and remove it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, matching the primary tap to your supply voltage, and reconnect all leads per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24 VAC at the secondary and a working thermostat display.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo power to the thermostat and no system response to a call\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuses on the control board\u003c\/li\u003e\n\u003cli\u003eBurning smell or scorching on the transformer body\u003c\/li\u003e\n\u003cli\u003eNo measurable 24 VAC across the secondary terminals\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":"Direct Replacement","offer_id":63021614498163,"sku":"202300900212-GEN","price":29.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047946043763,"sku":"202300900212","price":38.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-202300900212_801e731c-98f4-44e3-bea3-e9f9df17448b.jpg?v=1782881934","url":"https:\/\/nationalhvacparts.com\/products\/icp-24v-transformer-for-wama36004a1-40va-control-transformer-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}