OEM Carrier Defrost Control Board CESO130076-00 for Model PH3PEA042000AA

This is the factory OEM defrost control board for the Carrier PH3PEA042000AA heat pump. The defrost control board serves as the operational brain of your heat pump's defrost system — continuously monitoring outdoor coil sensors, timing defrost cycles, and coordinating reversing valve and fan operation to prevent ice buildup on the outdoor coil. When this board fails, common symptoms include the unit staying locked in heating or cooling mode, the outdoor coil icing over completely, erratic defrost cycling, or a full system lockout with no heating or cooling output.

• OEM Part Number: CESO130076-00 | Also superseded by HK32EA008 / CEPL130433-02 — verify your unit's current board number before ordering.
• OEM vs Generic: This is a genuine OEM Carrier board manufactured to exact factory specifications. Generic aftermarket boards may use off-spec timing circuits and sensor thresholds that cause premature defrost cycling or missed defrost events, leading to compressor damage over time.
• Install Difficulty: 3/5 — Disconnect power at the breaker before servicing. Tools needed: ¼" nut driver, needle-nose pliers, multimeter, and phone or camera to photograph all wiring connections before removal. Note the board's terminal labels carefully — incorrect wiring can damage the new board instantly.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed and factory-specified for the Carrier PH3PEA042000AA packaged heat pump. Cross-references include HK32EA008, CEPL130433-02, CEBD430433-09A, and kit part 38EY660001. Always verify the part number on your existing board's label before ordering. Not sure if this fits your unit? Contact our HVAC parts specialists for free fitment verification — we ship same business day on all in-stock orders.