OEM Carrier Defrost Control Board CESO130076-00 for Model PH3PNA036000AA

This OEM defrost control board is the factory-specified replacement for the Carrier PH3PNA036000AA heat pump. The defrost control board acts as the operational brain of your heat pump's defrost system — it continuously monitors sensors and safety switches, manages timed defrost cycles, and coordinates component operation to prevent damaging ice buildup on the outdoor coil. When this board fails, you'll typically see symptoms such as the outdoor unit freezing over completely, the system failing to enter defrost mode, erratic cycling behavior, or a total system lockout with no heating or cooling output.

• OEM Part Number: CESO130076-00 | Superseded/upgraded by HK32EA008 | Factory-matched PCB design for exact fit and function on Carrier PH3PNA036000AA heat pumps
• OEM vs Generic: OEM boards are manufactured to Carrier's exact electrical tolerances and firmware logic. Aftermarket boards may introduce timing errors in defrost cycles, leading to coil icing, compressor stress, and premature component failure — avoid the risk.
• Install Difficulty: 3/5 — Disconnect all power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, and a phone or camera to photograph all wiring connections prior to removal. Board replacement requires careful terminal-by-terminal rewiring; take your time.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed for Carrier model PH3PNA036000AA heat pump systems. Note: CESO130076-00 has been superseded by OEM part HK32EA008 (also cross-references CEPL130433-02 and CEBD430433-09A) — all are factory-approved fits for this unit. Always verify your existing board's part number against your data plate before ordering. Our fitment team is available to confirm compatibility before you buy — contact us anytime.