{"product_id":"carrier-transformer-fb4cnps42l00aaaa","title":"OEM Carrier Transformer HT01BD232 for Model FB4CNPS42L00AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BD232 for Model FB4CNPS42L00AAAA\u003c\/h1\u003e\n\u003cp\u003eKeep your Carrier FB4CNPS42L00AAAA fan coil unit's controls energized with this genuine OEM transformer (HT01BD232). The transformer steps line voltage down to the 24V low-voltage power that drives your thermostat, control board, relays, and contactor circuit — the signal path that tells your system when to run. A failed transformer often presents as a blank thermostat, a system that ignores every call for heating or cooling, or a low-voltage fuse that keeps blowing. Built to the exact VA rating and primary\/secondary voltages Carrier specified for the FB4CNPS42L00AAAA, this replacement installs as a true drop-in with no rewiring tricks. Installation is moderate: shut off power, photograph the wiring for reference, and move the primary and secondary leads to their matching terminals. A quick meter check at the secondary verifies 24V output and a successful repair. Genuine OEM construction provides dependable control power and a long working life. In stock and ready to ship — place your order before 3PM CST for same-day shipping.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNPS42L00AAAA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62949831868787,"sku":"carrier-transformer-fb4cnps42l00aaaa","price":56.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnps42l00aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}