OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG9MAA024040ADKA

This is the factory OEM Integrated Furnace Control (IFC) board for the Carrier PG9MAA024040ADKA gas furnace, originally sold under part number HK42FZ016 and superseded by the current kit part number 325878-751. The IFC board is the brain of your furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower in precise timing. When it fails, symptoms range from a complete no-heat lockout and blinking fault LED codes, to erratic blower behavior, failed ignition attempts, or a furnace that powers on but will not fire. Replacing the control board with a factory-matched OEM unit restores all original safety logic and timing parameters.

• Specs: 24 VAC control circuit | Input range: 98–132 VAC at 60 Hz | Igniter output: 5A at 120 VAC | Cool blower: 30A, 2 HP, 240 VAC | Heat blower: 5A, 1/2 HP, 240 VAC | Inducer motor: 4A at 120 VAC | Diagnostic LED fault codes included
• OEM vs Generic: The OEM 325878-751 kit ships with factory wiring adapter harnesses for seamless plug-and-play installation. Generic aftermarket boards (e.g., ICM282A series) replicate core function but may omit proprietary Carrier diagnostic sequences, potentially masking fault codes and complicating future troubleshooting.
• Install difficulty: 3/5 — Power off the furnace and lock out the breaker before starting. Tools needed: #2 Phillips screwdriver, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring harness connections before disconnecting. If installing the 325878-751 kit on an older unit with legacy connectors, use the included adapter harnesses for a correct fit.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse — order by 3:00 PM local time.

Compatibility: Engineered as the direct OEM replacement for Carrier PG9MAA024040ADKA gas furnaces. Part number HK42FZ016 has been officially superseded by the 325878-751 Integrated Furnace Control Board Kit. Verify your existing board's part number against the furnace data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today.