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OEM Carrier Transformer 40VA 208/230V-24V for PF1MNC018T00AAAA
Carrier

OEM Carrier Transformer 40VA 208/230V-24V for PF1MNC018T00AAAA

SKU: CARRIE-PF1MNC018T00AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF1MNC018T00AAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer HT01CN241 for Model PF1MNC018T00AAAA

This is the factory-specified OEM control transformer for the Carrier PF1MNC018T00AAAA fan coil unit. The transformer steps down 208/230V line voltage to the 24V AC signal used by the thermostat, control board, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — symptoms include a blank thermostat display, no response to calls for heating or cooling, and system-wide lockout with no error codes shown. Replacing this transformer with the correct OEM unit immediately restores full low-voltage circuit operation.

  • Specs: 208/230V primary input | 24V AC secondary output | 40VA power rating | Basler Electric OEM manufacturer (model BE28316007) | Factory-matched for Carrier PF1MNC018T00AAAA
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances, protecting the control board and thermostat from voltage fluctuations. Generic units often run off-spec, risking nuisance lockouts and premature board failure.
  • Install difficulty: 2/5 — Shut off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter. Label all low-voltage wires before disconnecting and verify 24V output with a multimeter before closing the unit.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier model PF1MNC018T00AAAA fan coil units requiring a 208/230V primary to 24V secondary 40VA control transformer. Verify your existing transformer's VA rating and primary voltage on the unit's data plate before ordering. Our team is available to confirm fitment — order with confidence.

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 PF1MNC018T00AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF1MNC018T00AAAA. 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 PF1MNC018T00AAAA?
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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