Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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The OEM Carrier transformer (HT01BD253) reduces line voltage to the 24V low-voltage control power that operates the thermostat, control board, and relays in your FY4ANB060010AAAA fan coil. A failed transformer renders the entire system unresponsive — no thermostat display, no blower, no cooling call. This direct OEM replacement restores dependable control power and is manufactured to Carrier's exact VA and voltage specifications for the FY4ANB060010AAAA. Installation is a moderate job: cut power, label the primary and secondary leads, mount the transformer, and reconnect. Most DIYers and technicians finish in 20-30 minutes, using a meter to confirm correct output. Before powering up, check for a shorted control wire that may have caused the original failure. Genuine OEM ensures the proper VA rating and better durability than generic units. In stock and ships same-day on orders before 3PM CST so your HVAC system returns to service quickly. Order from a trusted HVAC parts source with fast nationwide delivery.
This part is compatible with Carrier model FY4ANB060010AAAA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.