What are the specs for this Transformer?

The correct replacement for Carrier model FX4DNF061L10ABAA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number FX4DNF061L10ABAA.

Is this transformer compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier Transformer 40VA 120V/24V for FX4DNF061L10ABAA

Name: OEM Carrier Transformer 40VA 120V/24V for FX4DNF061L10ABAA
Brand: Carrier
SKU: CARRIE-FX4DNF061L10ABAA-TRANSFORMER-HT01CN241
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-FX4DNF061L10ABAA-TRANSFORMER-HT01CN241 Brand: Carrier

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OEM Carrier 40VA Control Transformer for Model FX4DNF061L10ABAA Air Handler

This is the OEM factory-replacement control transformer (part# HT01CN241) for the Carrier FX4DNF061L10ABAA fan coil air handler. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the entire control circuit goes dead: your thermostat loses power, the system will not respond to any calls for heating or cooling, and nothing runs. It is one of the first components to check when the system is completely unresponsive despite line voltage being present at the unit.

Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched for Carrier FX4DNF061L10ABAA air handler
OEM vs Generic: This OEM transformer is wound to exact VA and voltage tolerances required by Carrier. Undersized or off-tolerance generic transformers can sag under load, causing intermittent control issues, nuisance lockouts, and premature failure of downstream components like the contactor coil or control board.
Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 24V output after installation). Photograph all low-voltage wiring connections before disconnecting the old unit. The transformer mounts inside the air handler cabinet and connects to both the line-voltage and low-voltage wiring harnesses.
Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Designed specifically for the Carrier FX4DNF061L10ABAA multi-position fan coil air handler. Always verify your unit's data plate voltage requirements match before ordering. Need fitment confirmation? Our HVAC parts specialists are available to verify compatibility before you purchase — same-day shipping available on all in-stock orders.

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

OEM Carrier Transformer 40VA 120...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier FX4DNF061L10ABAA?

Yes. This is the factory-specified OEM transformer for the Carrier FX4DNF061L10ABAA. 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 FX4DNF061L10ABAA?

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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OEM Carrier Transformer 40VA 120V/24V for FX4DNF061L10ABAA

OEM Carrier 40VA Control Transformer for Model FX4DNF061L10ABAA Air Handler

Shipping Information

Return Policy

Frequently Asked Questions