OEM Carrier Defrost Control Board HK32EA007 for Model PH13NA03000GABAA

This is the genuine OEM Carrier defrost control board (part number HK32EA007), factory-specified for the Carrier PH13NA03000GABAA heat pump. The defrost control board manages the automatic defrost cycle that periodically reverses refrigerant flow to melt frost and ice accumulation off the outdoor coil. When this board fails, the outdoor unit will ice over completely, causing severe loss of heating capacity, compressor strain, and eventual system lockout — symptoms that won't resolve with a simple reset.

• Specs: OEM Carrier defrost control board | Part No. HK32EA007 | Cross-references: 1173636, 1177927 | Factory-matched for Carrier, Bryant, and Payne heat pump platforms | Compatible with R-410A systems
• OEM vs Generic: Genuine OEM boards carry factory-calibrated defrost timing and termination logic. Aftermarket boards frequently use approximated timing circuits that result in short-cycling defrost, coil re-icing, or compressor overload — negating any upfront savings.
• Install Difficulty: 3/5 — Requires disconnecting 24V control wiring harness and outdoor thermostat/sensor leads. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera to photograph wiring before removal. Always shut off power at the disconnect and breaker before servicing.
• Warranty: 1-year OEM manufacturer warranty. Orders placed before 3 PM ship same business day from our climate-controlled parts warehouse.

Compatibility: Designed for the Carrier PH13NA03000GABAA single-stage heat pump. Also replaces HK32EA001 on select Carrier, Bryant, and Payne heat pump models — always verify against your unit's wiring diagram and data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment at no charge before you buy.