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OEM Carrier Furnace Control Board HK42FZ011 for GB3AAV036070ACJA

SKU: carrier-control-board-gb3aav036070acja Brand: Carrier
$199.95

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

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OEM Carrier Furnace Control Board HK42FZ011 for GB3AAV036070ACJA

The genuine OEM Carrier HK42FZ011 integrated furnace control board is the brain of your GB3AAV036070ACJA gas furnace, managing the ignition sequence, blower timing, inducer motor, and safety lockouts. It reads the thermostat, pressure switch, and flame sensor, then sequences the igniter, gas valve, and blower for safe, efficient heat. Symptoms of a failed board include no response on a heat call, blower running continuously, flashing LED fault codes, or intermittent shutdowns. This factory part is programmed to the exact specifications of your Carrier furnace, so all timings and fault diagnostics match the OEM design. Installation is moderate: power down at the disconnect, photograph and transfer the wiring harness plugs one at a time, and swap the board onto the same standoffs in about 30 minutes. No special tools required beyond a nut driver. Choosing the OEM board avoids the compatibility and code-reading problems common with universal replacements. In stock and ships same-day before 3PM CST. Get your Carrier furnace heating reliably again with the correct factory control board.

Compatibility

This part is compatible with Carrier model GB3AAV036070ACJA.

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 GB3AAV036070ACJA?
Yes. This is the factory-specified OEM control board for the Carrier GB3AAV036070ACJA. 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 GB3AAV036070ACJA?
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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