OEM Carrier Defrost Control Board CESO130076-00 for Model PH3ZPA036000AA

This OEM defrost control board is the factory-specified replacement for the Carrier PH3ZPA036000AA heat pump. The defrost control board serves as the operational brain of your heat pump's defrost system — it monitors outdoor coil temperature, manages timed defrost cycles, and coordinates reversing valve and fan operation to prevent ice buildup on the outdoor coil. When this board fails, common symptoms include the outdoor unit icing over completely, the system staying locked in defrost mode, erratic cycling behavior, or a total loss of heating capacity in cold weather.

• Part Number: CESO130076-00 | Superseded/cross-reference by HK32EA008 | Also cross-references: CEPL130433-01, CEPL130433-02, CEBD430433-09A | OEM factory-matched specification
• OEM vs Generic: OEM boards are manufactured to Carrier's exact firmware and relay specifications, ensuring precise defrost timing and sensor thresholds. Aftermarket boards may use off-spec components that cause premature defrost cycling or board burnout, voiding equipment warranties.
• Install Difficulty: 3/5 — Disconnect all power before beginning. Tools needed: multimeter, 1/4" and 5/16" nut drivers, needle-nose pliers, and camera/phone to photograph all wiring harness connections prior to removal. Transfer wire connectors one at a time to avoid miswiring. Verify defrost sensor continuity before reinstalling the access panel.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse in original factory packaging.

Compatibility: Designed for the Carrier PH3ZPA036000AA heat pump (3-ton, single-phase). Also compatible with select Bryant and Payne heat pump models sharing the same defrost board specification — confirm your data plate part number before ordering. Note: CESO130076-00 has been superseded by HK32EA008; both are stocked and ship today. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us anytime.