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OEM Carrier Control Board HK42FZ011 for GB1AAV036111AGJA
Carrier

OEM Carrier Control Board HK42FZ011 for GB1AAV036111AGJA

SKU: carrier-control-board-gb1aav036111agja Brand: Carrier
$162.95

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 HK42FZ011 for GB1AAV036111AGJA

The genuine OEM Carrier furnace control board (HK42FZ011) governs the entire heating sequence on your unit — ignition timing, blower on/off delays, safety lockouts, and signal handling between the thermostat, igniter, gas valve, and limit switches. When this board fails, you'll see no heat, intermittent cycling, blower issues, or a flashing diagnostic LED fault code. This factory-fit replacement is programmed and terminal-matched to the exact requirements of the Carrier GB1AAV036111AGJA, delivering correct relay logic and timing without the guesswork of a universal kit. Installation is a moderate job: snap a photo of the existing wiring, disconnect power, move each connector to the corresponding terminal on the new board, and secure it in the factory tray. After restoring power, confirm the LED shows a steady heartbeat with no error flashes. The correct OEM board restores safe, reliable operation and protects the rest of your control circuit. In stock and ships same-day on orders before 3PM CST.

Compatibility

This part is compatible with Carrier model GB1AAV036111AGJA.

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 GB1AAV036111AGJA?
Yes. This is the factory-specified OEM control board for the Carrier GB1AAV036111AGJA. 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 GB1AAV036111AGJA?
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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