OEM Carrier Defrost Control Board HK32EA007 for Model CH13NA03600GAAAA

This is the factory OEM defrost control board (part number HK32EA007) designed as a direct replacement for the Carrier CH13NA03600GAAAA heat pump condenser. The defrost control board manages the automatic defrost cycle, monitoring outdoor coil temperature and run time to prevent ice buildup that would otherwise choke airflow and severely degrade heating efficiency. When this board fails, common symptoms include a heat pump stuck in defrost mode, failure to initiate defrost at all, erratic short-cycling, or a system that locks out and won't restart without a manual reset at the breaker.

• Specs: OEM Part Number HK32EA007 | Factory-programmed defrost timing and termination logic | 24V control circuit compatible | Direct plug-and-play connector replacement — no field programming required
• OEM vs Generic: This is a genuine Carrier OEM board with factory-calibrated defrost initiation and termination thresholds. Aftermarket boards frequently use generic timing logic that results in under-defrosting or over-defrosting, reducing efficiency and shortening compressor life over time.
• Install Difficulty: 3/5 — Requires disconnecting 24V and line-voltage control wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone or camera to photograph all wiring connections before removal. Always disconnect power at the breaker and verify zero voltage before handling. If refrigerant lines are iced over, allow full thaw before diagnosing the board.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: This board is the factory-specified replacement for the Carrier CH13NA03600GAAAA 3-ton heat pump condenser. Verify your existing board's part number matches HK32EA007 before ordering. If you are unsure, locate the data plate on your outdoor unit or the part number printed directly on the board. Our HVAC parts specialists are available to confirm fitment before you purchase — just reach out before placing your order.