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OEM Carrier 24V Transformer for Fan Coil Model FV4CNB003T00ABAA
Carrier

OEM Carrier 24V Transformer for Fan Coil Model FV4CNB003T00ABAA

SKU: carrier-transformer-fv4cnb003t00abaa Brand: Carrier
$44.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

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OEM Carrier 24V Transformer for Fan Coil Model FV4CNB003T00ABAA

This genuine OEM Carrier transformer provides the 24V low-voltage power that drives the thermostat, control board, and relays in your FV4CNB003T00ABAA fan coil unit. When a transformer shorts or burns out, the result is usually an unresponsive thermostat or a system that won't answer a heat or cool call. Installing the correct factory replacement restores the control circuit and returns the unit to dependable operation. Made to exact Carrier specifications for the FV4CNB003T00ABAA, it matches the original VA rating, mounting, and lead configuration for a seamless drop-in installation. The job is moderate in difficulty: disconnect power, note and label the primary/secondary leads, install the new transformer, reconnect, and verify. Check the part against your unit's data plate before wiring. Choosing OEM over a generic part means fewer surprises and a longer working life. This transformer is in stock, and orders placed before 3PM CST ship the same day — helping techs and homeowners reduce downtime and restore comfort fast.

Compatibility

This part is compatible with Carrier model FV4CNB003T00ABAA.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier Fan Coil Model FV4CNB003T00ABAA?
Yes. This is the factory-specified OEM transformer for the Carrier Fan Coil Model FV4CNB003T00ABAA. 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 Fan Coil Model FV4CNB003T00ABAA?
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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