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OEM Carrier Transformer 40VA 120V-24V for FY4ANF048015AAAA
Carrier

OEM Carrier Transformer 40VA 120V-24V for FY4ANF048015AAAA

SKU: CARRIE-FY4ANF048015AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANF048015AAAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier FY4ANF048015AAAA fan coil air handler. The transformer steps line voltage (120V) down to the 24V required to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this component fails, nothing in the system responds: the thermostat goes blank, the air handler won't energize, and the system appears completely dead even with power present at the unit.

  • Specs: 40VA rated | Primary: 120V AC | Secondary: 24V AC | Factory OEM part number HT01CN241 | Direct drop-in replacement with matching wire leads and mounting footprint
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can brown out under load, damage control boards, or blow fuses repeatedly — costing far more than the part itself.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify voltage is absent before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Always label or photograph existing wiring connections before removal. Confirm primary fuse integrity before replacement.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier FY4ANF048015AAAA fan coil air handler. Verify your unit's control board fuse (typically 3A) is not blown before replacing the transformer, as a shorted secondary load will damage a new unit immediately. Cross-reference OEM part number HT01CN241 on your unit's wiring diagram label to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you order — reach out before purchasing.

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 FY4ANF048015AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier FY4ANF048015AAAA. 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 FY4ANF048015AAAA?
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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