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Carrier

OEM Carrier Control Board HK42FZ034 for Model FA4CNC036010AAAA

SKU: carrier-control-board-fa4cnc036010aaaa Brand: Carrier
$149.95

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 HK42FZ034 for Model FA4CNC036010AAAA

This genuine OEM Carrier control board (HK42FZ034) is the central controller for your FA4CNC036010AAAA fan coil unit, governing blower operation, thermostat communication, and onboard safety logic. Symptoms of a failed board include a dead system, a blower that won't engage, fault codes, or unpredictable cycling. Manufactured and programmed to Carrier's factory standards, this authentic replacement is an exact fit for the FA4CNC036010AAAA, sparing you the wiring and reprogramming hassles common with universal aftermarket boards. Installing the correct OEM board restores precise fan sequencing, accurate timing, and integrated safety monitoring that protects your equipment from further damage. The job is rated moderate to advanced and typically takes 30 to 45 minutes; transfer the wiring one connection at a time, photograph the layout beforehand, and keep power off at the breaker. As a true Carrier component, it delivers guaranteed fit and performance right out of the box. Order before 3PM CST for same-day shipping so your system is back up with minimal downtime. Need to confirm your board revision? Our HVAC specialists are happy to verify compatibility before you order.

Compatibility

This part is compatible with Carrier model FA4CNC036010AAAA.

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 FA4CNC036010AAAA?
Yes. This is the factory-specified OEM control board for the Carrier Model FA4CNC036010AAAA. 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 FA4CNC036010AAAA?
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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