OEM Carrier Defrost Control Board HK32EA001 for Model PH4RNG036000BAAA

This is the genuine OEM factory-replacement defrost control board for the Carrier PH4RNG036000BAAA heat pump. The defrost control board monitors outdoor coil conditions and governs when the unit enters and exits its defrost cycle — a critical function in heat pump operation. When the board fails, you'll typically see the outdoor coil ice over completely, the system stuck in defrost mode, or a total loss of heating capacity as the unit cannot recover from frost buildup. Cross-reference part numbers include CEPL130524-01, CEBD430524-06A, 1173636, and 1177927.

• Part Number: HK32EA001 | OEM Carrier Factory Authorized Parts | Also supersedes HK32EA007 in most applications
• OEM vs Generic: Genuine OEM boards are factory-calibrated for precise defrost timing intervals (30/60/90 min). Generic aftermarket boards frequently ship with incorrect timing tolerances, causing short-cycling, premature compressor wear, and voided equipment warranties.
• Install Difficulty: 3/5 — Disconnect power at the disconnect box and verify zero voltage with a multimeter before touching the board. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter, camera/phone to document wiring positions. Note defrost time selection jumper position before removal.
• Warranty: 1-year OEM manufacturer warranty. Verified in-stock — ships same business day from our warehouse.

Compatibility: Designed as the factory-specified defrost control board for the Carrier PH4RNG036000BAAA 3-ton heat pump. Also fits select Bryant and Payne heat pump models using the HK32EA001 board. Always verify your existing board's part number on the label before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us before placing your order.