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Carrier

OEM Carrier Control Board HK42FZ Series for Model FA4ANF030000AAAA

SKU: carrier-control-board-fa4anf030000aaaa Brand: Carrier
$189.99

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 HK42FZ Series for Model FA4ANF030000AAAA

This OEM Carrier integrated control board governs ignition timing, blower operation, and safety lockout logic for your Carrier FA4ANF030000AAAA fan coil air handler. If your system shows no-heat or no-airflow symptoms, intermittent blower cycling, or flashing LED diagnostic codes, a failed control board is frequently the root cause. Acting as the command center of the unit, it monitors limit and safety switches, drives the indoor blower motor, and coordinates signaling between your thermostat and outdoor unit. Manufactured to precise factory standards, this genuine board restores reliable, code-compliant operation that aftermarket substitutes cannot consistently match. Installation is moderate: an experienced DIYer can complete it in 30-45 minutes by photographing the existing wiring, swapping connectors one at a time, and replicating dip-switch settings, but a licensed HVAC technician is recommended. Each board is fitment-verified for your exact model and backed by our guarantee. Order before 3PM CST and your control board ships same-day from our US warehouse. Eliminate downtime and restore dependable performance with the genuine Carrier replacement built for your FA4ANF air handler.

Compatibility

This part is compatible with Carrier model FA4ANF030000AAAA.

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 FA4ANF030000AAAA?
Yes. This is the factory-specified OEM control board for the Carrier Model FA4ANF030000AAAA. 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 FA4ANF030000AAAA?
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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