{"product_id":"icp-24v-40va-transformer-for-yk048gc2-reversing-valve-coil-relay-kit-ships-today","title":"ICP 24V 40VA Transformer for YK048GC2 — Reversing Valve Coil \u0026 Relay Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 24-volt control package for the ICP \/ Heil \/ Tempstar YK048GC2 heat pump includes the reversing valve coil (PN 34329055) and the 24V control relays (PN 96467 and PN 1053004). These low-voltage components carry the 24VAC signal produced by the unit's 40VA transformer to switch the reversing valve and energize the contactor and defrost circuits. When the transformer or its 24V control loop fails, the system loses the ability to switch between heating and cooling, the contactor will not pull in, and the outdoor unit appears completely dead even though line voltage is present. Replacing these components with genuine OEM parts restores reliable 24V control and proper heat-pump changeover.\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\u003e34329055, 96467, 1053004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003e24V Reversing Valve Coil \u0026amp; Control Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransformer Rating\u003c\/td\u003e\n\u003ctd\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered for the ICP \/ Heil \/ Tempstar YK048GC2 heat pump and the broader YK048G family of 4-ton split-system heat pumps that share the same 24V control architecture. Always confirm the part numbers stamped on your existing coil and relays 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 the unit disconnect, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the outdoor unit's control-panel service cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all low-voltage wiring before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the reversing valve coil from the valve stem and lift out the failed 24V relays from their mounting clips, noting terminal positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new coil fully on the valve, mount the replacement relays, and reconnect every 24V lead exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a heat and a cool call, and confirm the reversing valve shifts and the relays click in.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHeat pump runs in only one mode (stuck in heat or stuck in cool).\u003c\/li\u003e\n\u003cli\u003eOutdoor contactor never energizes despite a thermostat call.\u003c\/li\u003e\n\u003cli\u003eNo 24VAC measured at the control terminals.\u003c\/li\u003e\n\u003cli\u003eBuzzing, chattering, or overheated control relay.\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":63027187482995,"sku":"34329055-GEN","price":24.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047943717235,"sku":"34329055","price":32.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-34329055.jpg?v=1782881844","url":"https:\/\/nationalhvacparts.com\/products\/icp-24v-40va-transformer-for-yk048gc2-reversing-valve-coil-relay-kit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}