{"product_id":"carrier-transformer-fb4cnps48l00abaa","title":"OEM Carrier Transformer HT01BD231 for Model FB4CNPS48L00ABAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Transformer HT01BD231 for Model FB4CNPS48L00ABAA\u003c\/h1\u003e\n\u003cp\u003ePower the control circuit of your Carrier FB4CNPS48L00ABAA fan coil unit with this genuine OEM transformer (HT01BD231). The transformer converts incoming line voltage to the 24V low-voltage power that feeds your thermostat, control board, relays, and contactor — the backbone of your system's signaling. When it fails, the whole control side stops working: you may find a dark thermostat, no response to heating or cooling calls, or a low-voltage fuse that blows the moment power is restored. This unit is built to the precise VA rating and voltage specification Carrier engineered for the FB4CNPS48L00ABAA, guaranteeing an exact drop-in fit. Installation is moderate difficulty — cut power first, photograph the existing wiring, and carefully transfer the primary and secondary leads to the correct terminals. Verifying 24V at the secondary confirms the repair. Genuine OEM components deliver stable, reliable control power and resist the premature failures common with cheap aftermarket parts. In stock right now — orders placed before 3PM CST ship the same day.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model FB4CNPS48L00ABAA.\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":62949831836019,"sku":"carrier-transformer-fb4cnps48l00abaa","price":56.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/carrier-transformer-fb4cnps48l00abaa","provider":"National HVAC Parts","version":"1.0","type":"link"}