OEM Carrier Defrost Control Board HK32EA007 for Model PH13NR03000GAJAA

This is the genuine OEM factory-specified defrost control board for the Carrier PH13NR03000GAJAA heat pump. The defrost control board monitors outdoor coil temperature and manages timed defrost cycles to prevent ice accumulation on the evaporator coil — a critical function in heat pump operation. When this board fails, symptoms include a heavily iced outdoor coil, the system running continuously in heating mode without defrosting, short-cycling, or a complete loss of heating efficiency during cold weather. Replacing it with the correct OEM part restores factory-programmed defrost timing and sensor logic.

• Specs: OEM Part No. HK32EA007 | 24V control voltage | 1-Phase | Compatible with Carrier, Bryant, and Payne heat pump platforms | Factory-calibrated defrost cycle timing
• OEM vs Generic: This is a genuine Carrier OEM board with factory-programmed defrost algorithms. Aftermarket boards often use generic timing intervals that can cause under- or over-defrosting, leading to coil damage and reduced efficiency over time.
• Install Difficulty: 3/5 — Disconnect power at the breaker before removing the old board. Photograph all wiring harness connections before unplugging. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera for wiring reference. A licensed HVAC technician is recommended for this repair.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PH13NR03000GAJAA heat pump condensers. Cross-references with Carrier, Bryant, and Payne heat pump applications using the HK32EA007 board. Always verify your existing board's part number on the component label before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — order with confidence and get back to comfort fast.