{"product_id":"icp-40va-transformer-for-yk036g-24v-control-circuit-ships-today-1","title":"ICP 40VA Transformer for YK036G — 24V Control Circuit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 40VA control transformer steps line voltage down to the 24V control voltage that powers the low-voltage circuit on your ICP, Tempstar, and Heil YK036G system. That 24V supply energizes the components this part feeds — including the reversing valve coil (1063443) and the 24V control relays (96467, 1053004) — so the thermostat, defrost board, and contactor logic can operate. When a transformer fails or its internal fuse opens, the entire 24V control circuit goes dead: no thermostat call, no relay pull-in, and no heating or cooling. Replacing it restores stable, correctly regulated control power to the system.\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 Parts Served\u003c\/td\u003e\n\u003ctd\u003e1063443 (rev. valve coil), 96467 \u0026amp; 1053004 (24V relays)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl 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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40VA\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\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM replacement\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 replacement for the 24V control circuit on the ICP\/Tempstar\/Heil YK036G and other units using a 40VA control transformer to drive the reversing valve coil and control relays. Confirm primary voltage and VA rating 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 disconnect, 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 and secondary wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line-voltage primary and 24V secondary leads, then unbolt the old transformer from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 40VA transformer, then reconnect the primary to line voltage and the secondary to the 24V control wiring per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm a steady 24V reading across the secondary and proper relay\/coil operation.\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 output — thermostat and controls are completely dead\u003c\/li\u003e\n\u003cli\u003eReversing valve coil or relays will not energize\u003c\/li\u003e\n\u003cli\u003eRepeated blown control fuses or tripped breakers\u003c\/li\u003e\n\u003cli\u003eBurnt smell, scorched windings, or buzzing transformer\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":63027188105587,"sku":"1063443-GEN","price":29.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047966097779,"sku":"1063443","price":38.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1063443.jpg?v=1782883611","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-yk036g-24v-control-circuit-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}