OEM Carrier Integrated Furnace Control Board HK42FZ016 for Model PG8DAA024050ADJA

This is the OEM Carrier Integrated Furnace Control Board (IFC), part number HK42FZ016 (superseded/kit version: 325878-751), factory-specified for the Carrier PG8DAA024050ADJA gas furnace. The IFC board is the brain of your furnace — it sequences ignition, controls the inducer motor, regulates blower timing, monitors the flame sensor, manages the gas valve, and orchestrates all safety shutdowns. When it fails, you may experience a complete no-heat condition, repeated ignition lockouts, erratic blower operation, a furnace that starts and immediately shuts down, or a unit that shows fault codes but never fires. Diagnosing a failed control board should always come after ruling out the igniter, flame sensor, and pressure switch, as those components fail more frequently and are less expensive to replace.

• OEM Part Numbers: HK42FZ016 (original) | 325878-751 (current OEM kit with wiring harness adapters) | Cross-reference: CEPL130438-01, CEBD430438-09A, 1012-940-M
• Specifications: Input: 98–132 VAC at 60 Hz | Ignitor Output: 5A at 120 VAC | Cool Blower: 30A, 2 HP, 240 VAC | Heat Blower: 5A, 1/2 HP, 240 VAC | Inducer Motor: 4A FLA / 8.0 LRA at 120 VAC | Gas Valve: 24 VAC standard | Diagnostic LED fault codes included | Microprocessor-based with 100% gas shutoff on ignition failure | Reverse polarity and brownout protection
• OEM vs Generic: OEM boards are programmed with Carrier-specific ignition timing, blower delay sequences, and safety lockout logic. Aftermarket boards often use generic firmware that can cause nuisance lockouts, improper blower off-delays, and voided equipment warranties. Always use OEM for furnaces still under manufacturer warranty.
• Install Difficulty: 3/5 — Power down the furnace and confirm zero voltage before handling the board. Photograph all wire harness connections before unplugging. The 325878-751 kit includes wiring adapter harnesses for older-style boards. Tools needed: flathead and Phillips screwdrivers, nut driver, multimeter, camera or phone for documentation. Recommend ESD precautions when handling the board.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.

Compatibility: Factory-specified for Carrier model PG8DAA024050ADJA single-stage gas furnace. Also compatible across the broader Carrier, Bryant, and Payne fixed-speed furnace platform — see compatibility note below. Verify your existing board's part number on the label before ordering. Questions about fitment? Our HVAC-certified team confirms part compatibility before you buy. Order by 3 PM local time — ships today.