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OEM Carrier Transformer 40VA 120V-24V for FY4ANF036010AAAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for FY4ANF036010AAAA

SKU: CARRIE-FY4ANF036010AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANF036010AAAA

This OEM Carrier control transformer (part #HT01CN241) is the factory-specified replacement for the FY4ANF036010AAAA fan coil unit. The transformer steps down 120V line voltage to the 24V AC signal required to power the entire control circuit — including the thermostat, contactor coil, and any zone control boards. When this transformer fails, absolutely nothing in the low-voltage control system will respond: the thermostat goes blank, the unit won't call for cooling or heating, and you may find a blown fuse on the control board as a secondary symptom.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched output tolerance for reliable low-voltage control
  • OEM vs Generic: The OEM transformer is wound and potted to Carrier's exact VA and voltage specifications. Undersized or off-tolerance generic transformers can overheat, trip thermal cutoffs, and damage downstream control boards — making OEM the only safe choice for long-term reliability.
  • Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire nuts or terminal connectors. Label all wiring before removal. Verify secondary output voltage with a multimeter after installation before restoring low-voltage load.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for Carrier model FY4ANF036010AAAA fan coil units. Always verify transformer VA rating and primary/secondary voltages on your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists will confirm fitment before you buy — just reach out.

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 FY4ANF036010AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier FY4ANF036010AAAA. 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 FY4ANF036010AAAA?
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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