OEM Carrier Defrost Control Board HK32EA007 for Model CH13NA01900GABAA

This is the genuine OEM factory-replacement defrost control board for the Carrier CH13NA01900GABAA heat pump condenser. The defrost control board manages the automatic defrost cycle — monitoring outdoor coil temperature and initiating timed defrost sequences to prevent ice buildup on the coil. When this board fails, you may experience a frozen outdoor coil, a heat pump stuck in defrost mode, failure to initiate defrost at all, or complete system lockout with a fault code. Replacing with the correct OEM board ensures all timing intervals, sensor inputs, and relay outputs match factory specifications exactly.

• Specs: OEM Part Number HK32EA007 | Factory-matched defrost timing and temperature logic | Designed for Carrier CH13NA01900GABAA heat pump systems | Includes defrost relay and terminal connections per original design
• OEM vs Generic: OEM control boards are programmed with exact factory defrost timing parameters and relay ratings. Aftermarket boards may use mismatched logic intervals that cause premature defrost cycling, short-cycling, or compressor damage over time — making OEM the only reliable long-term choice for this application.
• Install Difficulty: 3/5 — Requires disconnecting low-voltage control wiring and high-voltage relay connections. Tools needed: 1/4" nut driver, needle-nose pliers, phone or camera to photograph wiring before removal. Always shut off power at the disconnect and breaker before servicing. Note all defrost timer jumper settings on the old board before swapping.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: This board is engineered specifically for the Carrier CH13NA01900GABAA heat pump condenser. Always verify the OEM part number HK32EA007 against your unit's data plate or existing board label before ordering. Our fitment team is available to confirm compatibility prior to purchase. Order today and your part ships same business day.