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OEM Carrier Control Board HK42FZ011 for Model GA1AAD036105ACJA
Carrier

OEM Carrier Control Board HK42FZ011 for Model GA1AAD036105ACJA

SKU: carrier-control-board-ga1aad036105acja 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 HK42FZ011 for Model GA1AAD036105ACJA

This genuine OEM Carrier control board is the electronic brain of your Carrier GA1AAD036105ACJA gas furnace, managing ignition sequencing, blower timing, safety interlocks, and diagnostic functions. The integrated furnace control board coordinates the igniter, gas valve, inducer, and blower to deliver safe, efficient heating cycles. When the board fails, you may experience no heat, erratic blower operation, failed ignition, or flashing diagnostic codes. This OEM replacement is built to the exact specifications of the GA1AAD036105ACJA, ensuring full compatibility with its wiring harness, relays, and firmware logic. Installation is a moderate to advanced job—typically 30 to 45 minutes—and involves carefully transferring wiring connections one at a time and noting the original placement. Always disconnect power before servicing and confirm the board's part number matches. Choosing genuine OEM ensures correct timing, reliable safety operation, and lasting performance. In stock and ships same-day when you order before 3PM CST so you can restore dependable heat fast.

Compatibility

This part is compatible with Carrier model GA1AAD036105ACJA.

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 GA1AAD036105ACJA?
Yes. This is the factory-specified OEM control board for the Carrier Model GA1AAD036105ACJA. 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 GA1AAD036105ACJA?
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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