{"product_id":"icp-24v-transformer-for-wph4424000rka1-40va-control-power-ships-today-1","title":"ICP 24V Transformer for WPH4424000RKA1 — 40VA Control Power | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 24V control transformer supplies the low-voltage power that runs the control circuit on your ICP \/ Tempstar \/ Heil WPH4424000RKA1 heat pump — including the 24V reversing-valve coil (PN 1172619) and barrier\/terminal circuit (PN 1176148). It steps line voltage down to 24 volts at 40VA to energize the thermostat, contactor coil, defrost board, and reversing valve solenoid. When the transformer fails, the entire control system goes dead: no thermostat display, no contactor pull-in, and no heat-pump changeover. It's a small part that takes the whole unit offline when it burns out.\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\u003eRelated Part Numbers\u003c\/td\u003e\n\u003ctd\u003e1176148 (Barrier 24V), 1172619 (Rev. Valve Coil 24V)\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 \/ Comfortmaker)\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\u003eWPH4424000RKA1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eBuilt for the ICP\/Tempstar\/Heil WPH4424000RKA1 packaged heat pump control circuit and compatible with the same 24V\/40VA control architecture used across ICP-family WPH-series equipment. Confirm primary voltage (line side) 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 with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-box service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary (line) and secondary (24V) leads before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the leads and unbolt the transformer from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and reconnect primary and secondary wiring per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary terminals with a meter.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlank thermostat with no 24V control power.\u003c\/li\u003e\n\u003cli\u003eContactor and reversing valve won't energize.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse or burnt transformer smell.\u003c\/li\u003e\n\u003cli\u003eNo measurable 24V on the secondary side.\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":63027203309939,"sku":"1176148","price":37.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047359136115,"sku":"1176148-GEN","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176148_f89a4896-0499-4b72-9ac7-ec155d2cfd5b.jpg?v=1782881996","url":"https:\/\/nationalhvacparts.com\/products\/icp-24v-transformer-for-wph4424000rka1-40va-control-power-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}