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OEM Carrier Transformer 40VA 120V-24V for FY5BNF036015AAAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for FY5BNF036015AAAA

SKU: CARRIE-FY5BNF036015AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit FY5BNF036015AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Transformer 40VA 120V to 24V for Model FY5BNF036015AAAA

This is the genuine OEM replacement transformer (part number HT01CN241) for the Carrier FY5BNF036015AAAA fan coil unit. The transformer steps down line voltage from 120V to the 24V AC signal that powers your entire control circuit — including the thermostat, contactor coil, and control board. When this component fails, the system goes completely silent: the thermostat shows no response, relays won't energize, and no heating or cooling function is possible. A failed transformer is often indicated by a blown fuse on the control board or a burning smell near the air handler cabinet.

  • Specs: Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01CN241 | Factory-matched impedance and thermal protection
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic units can overheat, blow fuses repeatedly, or damage downstream control components over time.
  • Install difficulty: 2/5 — Shut off all power to the unit at the disconnect and breaker before beginning. Tools needed: flat-head and Phillips screwdrivers, wire nuts or spade terminals, multimeter to verify 24V output after installation. Photograph all wiring connections before removal.
  • Warranty: 1-year OEM factory warranty against defects. In-stock units ship same business day when ordered before 3 PM local time.

Compatibility: Designed specifically for the Carrier FY5BNF036015AAAA fan coil unit. Always verify your existing transformer's input/output voltage and VA rating on the data plate before ordering to ensure a proper match. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.

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 $99
  • 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 FY5BNF036015AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier FY5BNF036015AAAA. 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 FY5BNF036015AAAA?
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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