OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG8UAA024065ADJA

This is the OEM Carrier Integrated Furnace Control (IFC) board — part number HK42FZ016, superseded by kit 325878-751 — factory-specified for the Carrier PG8UAA024065ADJA gas furnace. The IFC board is the central microprocessor that orchestrates every heating sequence: it energizes the inducer, proves the pressure switch, fires the hot surface igniter, monitors the flame sensor, and commands the blower motor through every stage of operation. When this board fails, symptoms range from a complete no-heat lockout and constant fault-code flashing to erratic blower behavior, ignition attempts with no flame, or a furnace that starts briefly then shuts down without completing a heat cycle.

• OEM Part Numbers: HK42FZ016 (original) | 325878-751 (current OEM kit replacement) | Cross-references: CEBD431012-01A, CEPL1311012-01, 1012-940-M
• Electrical Specifications: Input voltage 98–132 VAC @ 60 Hz | Igniter output: 5A @ 120 VAC | Cool blower: 30A, 2 HP, 240 VAC | Heat blower: 5A, 1/2 HP, 240 VAC | Inducer motor: 4A FLA / 8.0 LRA @ 120 VAC | Gas valve: 24 VAC | Onboard diagnostic LED fault codes for rapid troubleshooting
• OEM vs. Generic: This OEM board ships with factory-matched firmware, plug-and-play connector harnesses, and the exact diagnostic LED fault-code label required by Carrier service documentation. Aftermarket boards may use generic ICM282-series firmware that lacks model-specific blower timing profiles, potentially triggering nuisance lockouts or voiding equipment warranties.
• Install Difficulty: 3/5 — Requires de-energizing the furnace at the disconnect and breaker, photographing all wiring connections before removal, and transferring any DIP-switch settings from the old board. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera for wiring documentation. Electrostatic discharge precautions are mandatory — touch the furnace chassis before handling the board. A qualified HVAC technician is recommended.
• Warranty & Shipping: Backed by Carrier's OEM manufacturer warranty. In stock and ships same business day from our warehouse — get your furnace running again fast.

Compatibility: Engineered and factory-spec'd for the Carrier PG8UAA024065ADJA single-stage gas furnace. Part number HK42FZ016 has been superseded by the current OEM kit 325878-751, which ships as the authorized replacement. Always verify your unit's model and data plate before ordering. Our fitment specialists are available to confirm compatibility before you buy — no guesswork required.