What are the specs for this Control Board?

The correct replacement for Carrier model PH4GNAA30000AA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number PH4GNAA30000AA.

Is this control board compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

OEM Carrier Defrost Control Board HK32EA008 for PH4GNAA30000AA

Carrier

OEM Carrier Defrost Control Board HK32EA008 for PH4GNAA30000AA

Name: OEM Carrier Defrost Control Board HK32EA008 for PH4GNAA30000AA
Brand: Carrier
SKU: CARRIE-PH4GNAA30000AA-CONTROL_BOARD-HK32EA008
Price: 270.00 USD
Availability: InStock

SKU: CARRIE-PH4GNAA30000AA-CONTROL_BOARD-HK32EA008 Brand: Carrier

✓ Guaranteed to fit PH4GNAA30000AA — or your money back. Terms

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OEM Carrier Defrost Control Board HK32EA008 for Model PH4GNAA30000AA

This is the genuine OEM defrost control board (part number HK32EA008), the factory-specified replacement for the Carrier PH4GNAA30000AA heat pump. The defrost board monitors outdoor coil temperature sensors and orchestrates timed transitions between heating and defrost modes to prevent damaging frost and ice accumulation on the outdoor coil. When this board fails, common symptoms include a coil that remains permanently iced over, a heat pump that never enters a defrost cycle, erratic defrost timing, or a system that locks out on fault codes related to defrost operation.

Specs: OEM part HK32EA008 | Replaces HK32EA003 | Board ID: CEPL130433-02 / CEBD430433-09A | Selectable defrost intervals: 30, 60, 90, and 120 minutes | 24V control circuit compatible
OEM vs Generic: OEM boards are manufactured by Carrier to exact factory specifications for guaranteed compatibility and reliability. Generic or third-party boards may lack precise defrost timing calibration, risking coil damage, reduced efficiency, and shortened compressor life.
Install Difficulty: 3/5 — Disconnect and lock out power before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera for wiring documentation. Label all low-voltage wires before disconnecting. A speedup jumper on this board allows for accelerated defrost testing post-install to confirm proper operation.
Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PH4GNAA30000AA heat pump. Also cross-references Bryant and Payne models using the HK32EA003 or HK32EA008 board. Always verify your existing board's part number against the data plate inside the unit before ordering. Our fitment specialists are available to confirm compatibility before you buy.

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

OEM Carrier Defrost Control Boar...

$270.00

Frequently Asked Questions

Does this Control Board fit my Carrier PH4GNAA30000AA?

Yes. This is the factory-specified OEM control board for the Carrier PH4GNAA30000AA. 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 PH4GNAA30000AA?

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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OEM Carrier Defrost Control Board HK32EA008 for PH4GNAA30000AA

OEM Carrier Defrost Control Board HK32EA008 for Model PH4GNAA30000AA

Shipping Information

Return Policy

Frequently Asked Questions