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Carrier

OEM Carrier Control Board HK42FZ009 for Model FB4BSB070L00AAAA

SKU: carrier-control-board-fb4bsb070l00aaaa Brand: Carrier
$189.95

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

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OEM Carrier Control Board HK42FZ009 for Model FB4BSB070L00AAAA

This OEM Carrier control board (HK42FZ009) is the brain of your FB4BSB070L00AAAA fan coil air handler, coordinating blower start/stop, fan timing, and built-in safety shutoffs. If your unit won't power the blower, throws fault codes, or short-cycles, a degraded control board is the likely culprit. Choosing this genuine Carrier board guarantees the precise relay sequencing, capacitor ratings, and harness connectors engineered for your exact model — eliminating the guesswork and compatibility risks of universal replacements. Installation difficulty is moderate: disconnect power, photograph and transfer each wire, remove the mounting screws, and seat the new board. Typical replacement takes 30-45 minutes; line-voltage work should be performed by a licensed technician. Restore dependable heating and cooling operation with factory-original components built to Carrier's specifications. This part is in stock now, and any order placed before 3PM CST ships the same business day for fast delivery. Shop genuine Carrier parts with confidence at NationalHVACParts.com and get your system running right.

Compatibility

This part is compatible with Carrier model FB4BSB070L00AAAA.

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 FB4BSB070L00AAAA?
Yes. This is the factory-specified OEM control board for the Carrier Model FB4BSB070L00AAAA. 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 FB4BSB070L00AAAA?
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.
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