OEM Carrier Defrost Control Circuit Board CESO130076-00 for Model PH3ZNA030000AA

This is the factory OEM defrost control circuit board for the Carrier PH3ZNA030000AA heat pump. The defrost control board serves as the command center for your heat pump's defrost cycle — continuously monitoring outdoor coil temperature and ambient conditions to determine when to initiate and terminate defrost mode. When this board fails, symptoms include the outdoor coil freezing solid, the unit locking out on fault codes, erratic or continuous defrost cycling, or the heat pump failing to produce adequate heat during cold weather operation.

• Specs: OEM Part # CESO130076-00 | Superseded by HK32EA008 / CEPL130433-02 / CEBD430433-09A | Factory-matched voltage and timing parameters | Compatible with Carrier, Bryant, and Payne heat pump platforms
• OEM vs Generic: This is a genuine OEM-spec replacement board manufactured to exact factory tolerances. Generic aftermarket boards frequently use off-spec timing relays and thermistor inputs that result in shortened defrost cycles, ice buildup, or nuisance lockouts — issues you will not encounter with this factory-matched board.
• Install Difficulty: 3/5 — Requires isolation of 240V power at the disconnect before work begins. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and a smartphone to photograph all wiring harness connections prior to removal. Transfer wiring one connector at a time to avoid misrouting. Verify defrost sensor compatibility before reinstalling the service panel.
• Warranty: 1-year OEM manufacturer warranty against defects. Orders placed before 3PM local time ship same business day from our climate-controlled warehouse.

Compatibility: Direct replacement for Carrier PH3ZNA030000AA heat pump systems. This board also replaces legacy part numbers CESO130076-00, HH18HA282 kit reference 38EY660001, and cross-references CEPL130433-02 and CEBD430433-09A. Always verify your unit's data plate and existing board markings before ordering — our HVAC parts specialists are available to confirm fitment at no charge. Order now and get same-day shipping on this in-stock OEM board.