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OEM Carrier Control Board HK42FZ009 for Model GB1AAV036055AAJA
Carrier

OEM Carrier Control Board HK42FZ009 for Model GB1AAV036055AAJA

SKU: carrier-control-board-gb1aav036055aaja 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 HK42FZ009 for Model GB1AAV036055AAJA

This OEM Carrier furnace control board (HK42FZ009) governs your entire heating sequence — ignition timing, blower and inducer control, safety interlocks, and diagnostic fault codes. Built for the GB1AAV036055AAJA gas furnace, it orchestrates the igniter, gas valve, flame sensor, and pressure switch to produce safe, efficient heat each cycle. A failed board can leave the furnace completely dead, stuck short-cycling, or running the blower nonstop. Its onboard diagnostic LED makes pinpointing faults easier both before and after the swap. This genuine factory part guarantees the correct firmware, relay configuration, and connector layout your model requires — essential for the system's central controller. Installation is moderate: photograph all wiring first, cut power, move connectors one at a time to the new board, and remount it. Most technicians finish in 30-45 minutes. Choosing OEM ensures full timing and feature compatibility that aftermarket boards can't reliably match. In stock and ships same-day on orders before 3PM CST. Compatibility guaranteed for your GB1AAV036055AAJA furnace.

Compatibility

This part is compatible with Carrier model GB1AAV036055AAJA.

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 GB1AAV036055AAJA?
Yes. This is the factory-specified OEM control board for the Carrier Model GB1AAV036055AAJA. 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 GB1AAV036055AAJA?
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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