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OEM Carrier 40VA Transformer HT01CN241 for PF1MNC018008AAAA
Carrier

OEM Carrier 40VA Transformer HT01CN241 for PF1MNC018008AAAA

SKU: CARRIE-PF1MNC018008AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF1MNC018008AAAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Transformer HT01CN241 for Model PF1MNC018008AAAA

This is the factory OEM replacement transformer for the Carrier PF1MNC018008AAAA fan coil unit. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coils, and control board. When the transformer fails, the entire control circuit goes dead: your thermostat becomes unresponsive, the system won't call for heating or cooling, and a multimeter across the 24V secondary will read zero volts. Replacing the transformer is the quickest path to restoring full system function.

  • Specs: OEM part number HT01CN241 | 120V primary → 24V secondary | 40VA rating | Factory-matched output for Carrier PF1MNC018008AAAA control circuit
  • OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact VA rating and thermal protection specs. Generic substitutes often carry looser VA tolerances that can cause nuisance trips or premature burnout under high-demand control circuits.
  • Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting and verify 24V output with a meter after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PF1MNC018008AAAA fan coil unit. Confirm the 120V/24V 40VA transformer specification on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify exact fitment before you buy — contact us before placing your order.

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 PF1MNC018008AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF1MNC018008AAAA. 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 PF1MNC018008AAAA?
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