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OEM Carrier Transformer 40VA 208/230V–24V for PF4MNA049000AAAA
Carrier

OEM Carrier Transformer 40VA 208/230V–24V for PF4MNA049000AAAA

SKU: CARRIE-PF4MNA049000AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF4MNA049000AAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF4MNA049000AAAA

This is the factory OEM replacement control transformer (part number HT01CN241) for the Carrier PF4MNA049000AAAA fan coil and air handler unit. The transformer steps down line voltage (208/230V primary) to the 24V AC signal used by the low-voltage control circuit—the backbone of every thermostat call, contactor pull-in, and safety-switch response in your system. When the transformer fails, nothing works: the thermostat goes dark, the system refuses all commands, and you may find a blown fuse or tripped breaker on the secondary side. Replacing it with the correct OEM unit restores reliable 24V power instantly.

  • Specs: 208/230V Primary | 24V Secondary | 40VA rating | Basler Electric manufactured | Factory OEM part number HT01CN241
  • OEM vs Generic: This OEM transformer is wound to Carrier's exact VA and voltage tolerance specifications. Undersized or off-spec generic transformers can overheat, nuisance-trip secondary fuses, or damage sensitive control boards over time.
  • Install difficulty: 2/5 — Turn off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label and photograph all low-voltage wiring connections before disconnecting. Confirm fuse integrity on the secondary circuit before energizing.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier PF4MNA049000AAAA fan coil/air handler. Also fits other Carrier, Bryant, ICP, Heil, and Tempstar models specifying the HT01CN241 transformer—always verify your unit's data plate and wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy.

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 PF4MNA049000AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF4MNA049000AAAA. 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 PF4MNA049000AAAA?
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
HVAC Parts Specialist — Online