Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Transformer 40VA 208/230V–24V for PF4MNB061L00ACAA
Carrier

OEM Carrier Transformer 40VA 208/230V–24V for PF4MNB061L00ACAA

SKU: CARRIE-PF4MNB061L00ACAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF4MNB061L00ACAA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer 208/230V–24V for Model PF4MNB061L00ACAA

This OEM control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF4MNB061L00ACAA fan coil and air handler unit. The transformer steps down the 208/230V line voltage to the 24V used by thermostats, control boards, contactors, and all low-voltage safety circuits. When it fails, the entire control circuit goes dead — the thermostat loses power, the system refuses to respond to any call for heating or cooling, and you may find a blown fuse on the control board. A failed transformer is one of the first things any technician checks when a system shows zero response.

  • Specs: 208/230V primary input | 24V secondary output | 40VA rated | OEM part number HT01CN241 | Factory-matched to Carrier tolerances
  • OEM vs Generic: This is a genuine Carrier OEM transformer built to exact factory specifications. Generic transformers may carry different VA ratings or inferior core materials, risking repeated fuse failures or nuisance control trips under peak load.
  • Install difficulty: 2/5 — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Label all low-voltage wires before disconnecting. Transformer typically mounts inside the air handler cabinet on a bracket or foot mount.
  • Warranty: 1-year OEM manufacturer warranty. In-stock orders ship the same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PF4MNB061L00ACAA. Always verify the part number on your existing transformer's label before ordering — confirm 208/230V primary and 24V/40VA secondary ratings match your unit's data plate. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us today and get your system back up fast.

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 PF4MNB061L00ACAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF4MNB061L00ACAA. 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 PF4MNB061L00ACAA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online