OEM Carrier Control Transformer 40VA for Model N6A48NG480207

This is the factory OEM replacement control transformer (part number HT01BC116) for the Carrier N6A48NG480207 packaged unit. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dark — your thermostat shows blank or unresponsive, and the system will not heat, cool, or respond to any call. A failed transformer is often the first suspect when a system goes completely unresponsive with no fault codes.

• Specs: 40VA rating | 120V primary / 24V secondary | OEM part number HT01BC116 | Factory-matched output for stable low-voltage circuit performance
• OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control circuits. Undersized or off-tolerance generic transformers can cause nuisance lockouts, board damage, or contactor chatter — replacing with OEM protects your downstream components.
• Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label or photograph all low-voltage wiring connections before disconnecting the old unit.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before 3PM local time.

Compatibility: Designed as the direct factory replacement for Carrier N6A48NG480207 packaged units. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or transformer label before ordering. Our fitment team is available to confirm compatibility before you purchase — just reach out with your model and serial number.