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OEM Carrier 40VA Transformer 24V Control Circuit for PF4MNB061T00AAAA
Carrier

OEM Carrier 40VA Transformer 24V Control Circuit for PF4MNB061T00AAAA

SKU: CARRIE-PF4MNB061T00AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF4MNB061T00AAAA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 24V Control Circuit Transformer HT01CN241 for Model PF4MNB061T00AAAA

This OEM step-down transformer is the factory-specified replacement for the Carrier PF4MNB061T00AAAA air handler. The transformer steps 120V line voltage down to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the system goes completely unresponsive: the thermostat goes dark, nothing calls for heating or cooling, and no fault codes are generated because the control board itself has lost power.

  • Specs: 120V primary → 24V secondary output | 40VA rating | Factory-matched OEM part number HT01CN241 | Screw-terminal or plug-in lead connections
  • OEM vs Generic: This is a genuine OEM Carrier transformer built to exact VA and voltage tolerance specifications. Generic transformers often run undersized VA ratings, causing voltage sag under load that triggers nuisance lockouts and premature control board failure.
  • Install Difficulty: 2/5 — Shut off all power at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, multimeter, wire labels or tape. Always verify 24V output with a multimeter after installation before restoring low-voltage wiring.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PF4MNB061T00AAAA air handlers. Confirm your existing transformer's primary voltage (120V), secondary voltage (24V), and VA rating on the data plate or wiring diagram before ordering. Our parts specialists are available to verify fitment — just reach out before you 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 PF4MNB061T00AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF4MNB061T00AAAA. 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 PF4MNB061T00AAAA?
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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