OEM Carrier Defrost Control Board HK32EA001 for Model PH13NR04800GAEAA

This is the factory OEM defrost control board for the Carrier PH13NR04800GAEAA heat pump. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and initiating timed or demand-based defrost sequences to prevent ice accumulation on the outdoor unit. When this board fails, common symptoms include the outdoor coil freezing solid, the heat pump failing to defrost, continuous or absent defrost cycling, or the system going into a fault lockout. Replacing this board with the genuine OEM part restores factory-programmed defrost logic and protects compressor longevity.

• Specs: OEM Part Number HK32EA001 | Factory defrost control board | Compatible with Carrier 4-ton R-22 heat pump systems | Direct drop-in replacement with no field modification required
• OEM vs Generic: This is the genuine Carrier OEM board, programmed with the exact defrost timing, temperature thresholds, and fault logic specified for the PH13NR04800GAEAA. Aftermarket boards may use generalized defrost algorithms that can cause premature compressor damage or nuisance lockouts.
• Install Difficulty: 3/5 — Shut off power at the disconnect before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a phone or camera to photograph all wiring connections before removal. Transfer all wire connections one at a time to avoid miswiring. Confirm control voltage (24V) is present after install before closing the unit.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PH13NR04800GAEAA heat pump (4-ton, R-22 refrigerant). Always verify your unit's model and data plate before ordering. Not sure if this is the right board? Our HVAC parts specialists verify fitment before you buy — contact us today and get your system back up and running fast.