Same-day shipping on orders before 3PM CST · 15,000+ OEM Parts In Stock · Carrier · Bryant · ICP · Heil · Tempstar
Track Order | 1-800-NHP-HVAC | Trade Accounts

Menu

Home Shop All Account Cart
Home / OEM Carrier Air Handler Control Board...

IMAGE COMING SOON

Carrier

OEM Carrier Air Handler Control Board for Model FB4BSX048000AAAA

SKU: carrier-control-board-fb4bsx048000aaaa Brand: Carrier
$189.95

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

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

OEM Carrier Air Handler Control Board for Model FB4BSX048000AAAA

This genuine OEM Carrier control board is the electronic command center of your FB4BSX048000AAAA fan coil air handler, coordinating blower activation, fan speed selection, and signaling between your thermostat and outdoor condenser. A failing board often shows up as no airflow, random cycling, blower lockout, or a dead unit. Swapping in this precise-fit replacement brings back consistent heating and cooling and shields the system from electrical faults. It is built specifically for the Carrier FB4BSX048000AAAA (4-ton) air handler, matching the original terminal arrangement, relay ratings, and wiring harness so installation needs no modification. This is a moderate-difficulty repair best performed by a licensed HVAC professional; disconnect all power before you begin. Every board ships in anti-static protective packaging and goes out same-day on orders placed before 3PM CST. Selecting an authentic OEM Carrier board over an aftermarket imitation preserves factory specifications, guarantees full compatibility, and delivers the longest dependable service life for your air handler.

Compatibility

This part is compatible with Carrier model FB4BSX048000AAAA.

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 Control Board fit my Carrier Model FB4BSX048000AAAA?
Yes. This is the factory-specified OEM control board for the Carrier Model FB4BSX048000AAAA. 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 control board on my Carrier Model FB4BSX048000AAAA?
Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.
My HVAC system is completely dead. What could be wrong?
Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.
Is this control board 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 control board?
OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.
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