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OEM Carrier Transformer 40VA 120V/24V for FB4BNF060010AAAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for FB4BNF060010AAAA

SKU: CARRIE-FB4BNF060010AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier Transformer 40VA for Model FB4BNF060010AAAA

This is the factory OEM replacement transformer (part number HT01CN241) for the Carrier FB4BNF060010AAAA fan coil air handler. The transformer steps down 120V line voltage to 24V AC to power the entire control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, nothing in the system responds: the thermostat goes dark, the air handler won't energize, and the system appears completely dead. It is one of the most overlooked yet critical components in any HVAC system.

  • Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched to Carrier FB4BNF060010AAAA wiring and mounting configuration
  • OEM vs Generic: OEM transformers use factory-wound coils with proper VA ratings and thermal cutoffs. Undersized or off-spec generic units can overheat, trip on thermal overload, or introduce voltage fluctuations that damage control boards downstream.
  • Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Verify 24V output with a multimeter before reassembling the unit.
  • Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Engineered specifically for the Carrier FB4BNF060010AAAA fan coil air handler. Confirm your existing transformer's VA rating and primary/secondary voltages on the unit's data plate or wiring diagram before ordering. Our fitment team is available to verify compatibility before you purchase — no guesswork required.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier FB4BNF060010AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier FB4BNF060010AAAA. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the transformer on my Carrier FB4BNF060010AAAA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.
My thermostat has no power. What failed?
Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.
Is this transformer compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier transformer?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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