{"product_id":"icp-40va-transformer-for-wjh342000ktp0a2-208-230v-to-24v-ships-today","title":"ICP 40VA Transformer for WJH342000KTP0A2 - 208\/230V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 40VA control transformer (part number 1173691) supplies the 24V low-voltage power that runs the entire control circuit of the ICP\/Heil\/Tempstar WJH342000KTP0A2 heat pump. It steps 208\/230V line voltage down to 24V to energize the thermostat, contactor coil, reversing-valve coil, and safety controls. When a transformer fails, the system goes completely dead at the low-voltage side: no thermostat display, no contactor pull-in, and no response to a call for heating or cooling. Transformers fail from a shorted control wire, a shorted coil, or sustained overload. This unit is rated at 40VA to carry the full control load of the WJH342000KTP0A2 reversing-valve heat pump 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 Part Number\u003c\/td\u003e\n\u003ctd\u003e1173691\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 \/ Heil \/ Tempstar\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 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\u003eRelated OEM Parts\u003c\/td\u003e\n\u003ctd\u003e1176032 (24V Barrier), 1172619 (Rev Valve Coil 24V), 1173708 (Reversing Valve w\/Coil 24V)\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 ICP\/Heil\/Tempstar WJH342000KTP0A2 heat pump control circuit. The 208\/230V-to-24V, 40VA configuration is a common service transformer across many residential heat pump and air handler boards. Verify primary and secondary voltage and VA rating against the original 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 at the breaker and verify zero voltage at the transformer primary leads with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e - Remove the control\/electrical panel to reach 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 - Disconnect the line-voltage primary leads and 24V secondary leads; unbolt the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e - Mount the new transformer, match the primary tap to your supply voltage, and reconnect per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e - Restore power and confirm 24V at the secondary terminals and normal thermostat\/contactor operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermostat is blank and the system is completely unresponsive.\u003c\/li\u003e\n\u003cli\u003eNo 24V reading at the secondary terminals with primary power present.\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown low-voltage fuse or burnt-smelling transformer.\u003c\/li\u003e\n\u003cli\u003eContactor and reversing valve coils will not energize on a call.\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":63021551485299,"sku":"1176032-GEN","price":34.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047959183731,"sku":"1176032","price":44.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176032_c2daa787-8890-4fc8-8c1a-759675a00257.jpg?v=1782883004","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wjh342000ktp0a2-208-230v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}