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OEM Carrier Transformer 40VA 120V/24V for FV4ANF003000ABAA
Carrier

OEM Carrier Transformer 40VA 120V/24V for FV4ANF003000ABAA

SKU: CARRIE-FV4ANF003000ABAA-TRANSFORMER-HT01CN236 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN236 for Model FV4ANF003000ABAA

This OEM control transformer (part number HT01CN236) is the factory-specified replacement for the Carrier FV4ANF003000ABAA fan coil air handler. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, control board, and contactor coil. When this component fails, the entire control circuit goes dark: the thermostat loses power, the system becomes completely unresponsive, and no heating or cooling operation is possible.

  • Specs: Input 120V AC | Output 24V AC | 40VA rated | Replaces OEM part number HT01CN236 | Factory-matched insulation class and VA capacity
  • OEM vs Generic: This is a genuine OEM Carrier transformer wound to exact factory specifications. Generic transformers often carry lower insulation ratings and inconsistent VA output, which can cause nuisance tripping of secondary fusing or premature control board failure.
  • Install difficulty: 2/5 — Shut off all power at the breaker and disconnect switch before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before removal. Confirm secondary output voltage with a multimeter after installation before restoring full system power.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered for the Carrier FV4ANF003000ABAA fan coil air handler. Always verify your unit's data plate voltage and VA requirements match before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before purchasing if you have any questions. In stock and ready to ship today.

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 $75
  • 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 FV4ANF003000ABAA?
Yes. This is the factory-specified OEM transformer for the Carrier FV4ANF003000ABAA. 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 FV4ANF003000ABAA?
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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