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OEM Carrier Transformer 40VA 120V-24V for FX4DNF061T10AAAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for FX4DNF061T10AAAA

SKU: CARRIE-FX4DNF061T10AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer 40VA 120V to 24V for Model FX4DNF061T10AAAA

This OEM replacement transformer (part number HT01CN241) is the factory-specified control circuit transformer for the Carrier FX4DNF061T10AAAA fan coil unit. The transformer steps down line voltage from 120V to the 24V AC required to power the control board, thermostat circuit, and all low-voltage components. When this transformer fails, the entire control circuit goes dead — the thermostat will display normally but the system will not respond to any calls for heating or cooling, and no relays or contactors will energize.

  • Specs: Primary voltage: 120V AC | Secondary voltage: 24V AC | 40VA rated | OEM part number HT01CN241 | Factory-matched output for full control circuit compatibility
  • OEM vs Generic: This OEM Carrier transformer is wound to exact factory VA and voltage specifications, ensuring stable 24V output under full load. Generic transformers often run outside rated tolerances, causing nuisance lockouts, erratic thermostat behavior, and premature control board failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker and confirm voltage is zero with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers, wire nuts or spade connectors. Photograph all wiring connections before removing the old transformer.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier FX4DNF061T10AAAA fan coil unit. Verify primary and secondary voltage ratings on your unit's data plate prior to ordering to confirm fitment. Our HVAC parts specialists are 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 FX4DNF061T10AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier FX4DNF061T10AAAA. 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 FX4DNF061T10AAAA?
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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