OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG8DAA024050AAJA

This OEM Integrated Furnace Control (IFC) board is the factory-specified replacement for the Carrier PG8DAA024050AAJA gas furnace. As the operational brain of your heating system, the IFC board sequences every stage of the heating cycle — energizing the inducer motor, proving the pressure switch, firing the hot surface igniter, opening the gas valve, and ramping the blower to the correct heat speed. When the board fails, common symptoms include a complete no-heat lockout, a furnace that starts then immediately shuts down, erratic blower behavior, or fault codes that cannot be cleared by resetting the system. Part number HK42FZ016 has been superseded by the current OEM kit 325878-751 — both part numbers are fulfilled by this listing.

• OEM Part Numbers: HK42FZ016 (original) | 325878-751 (current OEM supersession kit) | Compatible board reference: ICM282 series | 24 VAC control circuit
• OEM vs Generic: This OEM board ships with factory-matched firmware, terminal labeling, and the fault-code legend sticker included in the 325878-751 kit. Generic aftermarket boards frequently omit the plug kit and may lack the enhanced brownout and reverse-polarity protection built into the OEM design — risking repeat failures and voiding equipment warranties.
• Install Difficulty: 3/5 — Photograph all wiring harnesses before disconnecting. Label every connector. Power down and lock out the furnace at the disconnect and breaker before starting. Tools needed: #2 Phillips screwdriver, 1/4" nut driver, smartphone camera, multimeter. A fault-code label is included and must be affixed inside the furnace door per installation instructions.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse. Arrives in original factory packaging.

Compatibility: Engineered for the Carrier PG8DAA024050AAJA packaged gas furnace and cross-compatible with Bryant, Payne, and Day & Night units sharing the HK42FZ-series board family. Verify your existing board's part number on the component label before ordering. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today.