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OEM Carrier Defrost Control Board HK32EA007 for PH4GNAB36000AA
Carrier

OEM Carrier Defrost Control Board HK32EA007 for PH4GNAB36000AA

SKU: CARRIE-PH4GNAB36000AA-CONTROL_BOARD-HK32EA007 Brand: Carrier
✓ Guaranteed to fit PH4GNAB36000AA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Defrost Control Board HK32EA007 for Model PH4GNAB36000AA

This is a genuine OEM Carrier defrost control board (part number HK32EA007), factory-specified for the Carrier PH4GNAB36000AA heat pump. The defrost control board governs the timing and initiation of defrost cycles, monitoring outdoor coil conditions and commanding the reversing valve and defrost relay to shed ice buildup from the evaporator coil. When this board fails, the outdoor coil becomes encased in ice, the system loses heating capacity, and in severe cases the heat pump will lock out entirely or run continuously in defrost without recovering.

  • Specs: OEM Part # HK32EA007 | Also cross-references 1173636 & 1177927 | Designed for Carrier / Bryant / Payne heat pump split systems | Factory-matched defrost timing and temperature thresholds
  • OEM vs Generic: This is a genuine Carrier OEM board with factory-calibrated defrost intervals. Aftermarket boards may use approximate timing logic that causes premature or delayed defrost, reducing efficiency and accelerating compressor wear over time.
  • Install difficulty: 3/5 — Disconnect power at the disconnect and breaker before servicing. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, phone or camera to photograph wiring harness connections before removal. Board mounts to the control panel; all connectors are keyed for correct reinstallation.
  • Warranty: 1-year OEM manufacturer warranty. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier PH4GNAB36000AA heat pump systems. Cross-references legacy part numbers 1173636 and 1177927. Always confirm your existing board's part number on the board label or unit data plate before ordering. Our fitment team is available to verify compatibility prior to purchase — order with confidence and get back to comfort fast.

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 $99
  • 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 info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Control Board fit my Carrier PH4GNAB36000AA?
Yes. This is the factory-specified OEM control board for the Carrier PH4GNAB36000AA. 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 PH4GNAB36000AA?
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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Mike Rivera
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