{"product_id":"icp-40va-transformer-for-wjh336000ktp0a1-208-230v-to-24v-control-transformer-ships-today-1","title":"ICP 40VA Transformer for WJH336000KTP0A1 — 208\/230V to 24V Control Transformer | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM control transformer (part number 1173691) supplies the 24-volt low-voltage power for the ICP \/ Heil \/ Tempstar WJH336000KTP0A1 packaged heat pump. It steps the unit's 208\/230V line voltage down to 24V at 40VA, energizing the control board, contactor coil, reversing-valve coil, and thermostat circuit. When a transformer fails — usually from a shorted secondary, an overloaded coil, or age — the entire low-voltage side goes dead: the thermostat blanks, the contactor won't pull in, and nothing runs even though line power is present. The listing also pairs with the unit's reversing-valve hardware (barrier 1176032, coil 1172619, and valve\/coil assembly 1173708) that share this 24V control circuit.\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 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 \/ Comfortmaker)\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\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\u003eWJH336000KTP0A1\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 WJH336000KTP0A1 packaged heat pump and used across the WJH336000 platform produced by International Comfort Products under the Heil, Tempstar, and Comfortmaker brands. Verify your old transformer is stamped 208\/230V primary, 24V \/ 40VA secondary, part 1173691, 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 at the line terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-access service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary leads before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Tag and disconnect the line-voltage primary and 24V secondary leads, then unbolt the failed transformer from its mounting foot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new OEM transformer, matching the correct 208 or 230 primary tap, and reconnect each lead per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary; verify the thermostat, contactor, and reversing valve respond.\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 at the control board or thermostat with line power present\u003c\/li\u003e\n\u003cli\u003eContactor and reversing valve fail to energize on a call for heat or cool\u003c\/li\u003e\n\u003cli\u003eBlank or unresponsive thermostat\u003c\/li\u003e\n\u003cli\u003eBurnt smell, discoloration, or buzzing from the 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":"OEM","offer_id":63027230802291,"sku":"1176032","price":32.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047382073715,"sku":"1176032-GEN","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1176032_609eb7e8-9d32-4165-b362-da33df0a0a51.jpg?v=1782882991","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-wjh336000ktp0a1-208-230v-to-24v-control-transformer-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}