OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG8DAA024070ACJA

This is the OEM factory-replacement Integrated Furnace Control (IFC) board for the Carrier PG8DAA024070ACJA gas furnace, carrying OEM part numbers HK42FZ016 and its current kit successor 325878-751. The IFC board is the brain of your furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower motor on every call for heat. When it fails, symptoms range from a complete no-heat lockout and error code flashes on the diagnostic LED, to erratic blower behavior, ignition failure after 3 tries, or a furnace that runs briefly then shuts down hard. Do not replace this board without first ruling out a failed flame sensor, pressure switch, or inducer — the board is downstream of all of them.

• OEM Part Numbers: HK42FZ016 (original) | 325878-751 (current kit with adapter harnesses) | Cross-ref: CEPL1311012-01, CEBD431012-01A, ICM282, 1012-940-M
• Specs: Input: 98–132 VAC @ 60 Hz | Ignitor output: 5A @ 120 VAC | Cool blower: 30A, 2 HP, 240 VAC | Heat: 5A, 1/2 HP, 240 VAC | Inducer motor: 4A FLA / 8.0 LRA @ 120 VAC | Gas valve: 24 VAC standard | Diagnostic LED fault codes included | Reverse polarity & brownout protection
• OEM vs Generic: The OEM 325878-751 kit ships with factory-matched adapter harnesses for plug-and-play installation — no splicing. Generic ICM282-type boards omit the harness kit and may run looser timing tolerances on ignition sequencing, increasing the risk of nuisance lockouts or premature igniter wear.
• Install Difficulty: 3/5 — Discharge any residual voltage before handling. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera for wiring documentation. Ground yourself with an anti-static wrist strap — ESD can destroy the microprocessor instantly. The 325878-751 kit includes adapter harnesses; photograph all connector positions before removing the old board. Estimated install time: 45–75 minutes for an experienced DIYer.
• Warranty: 1-year OEM manufacturer warranty on the 325878-751 kit. Ships same business day from our warehouse when ordered before 3 PM local.

Compatibility: Verified for Carrier model PG8DAA024070ACJA packaged gas furnace. The 325878-751 kit supersedes the discontinued HK42FZ016 and is also compatible with Bryant and Payne single-stage gas furnaces sharing the HK42FZ0xx board series. Always confirm your existing board's part number on the board label before ordering. Questions about fitment? Our HVAC parts team will verify compatibility before you buy — ships same day.