OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG9MAA048080ACKA

This is the factory OEM integrated furnace control board (IFC) for the Carrier PG9MAA048080ACKA gas furnace, carrying primary part number HK42FZ016 and its current OEM successor kit number 325878-751. The IFC board is the brain of your furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower through every heating cycle. When this board fails, typical symptoms include: the furnace enters hard lockout after ignition attempts, the blower runs continuously or not at all, the inducer starts but the burner never lights, or the system displays a fault LED blink code indicating a control failure.

• Specs: 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 (FLA), 8.0A (LRA) at 120 VAC | Compatible with 24 VAC standard thermostat | Onboard diagnostic LED blink codes
• OEM vs Generic: This listing ships the genuine Carrier OEM board (325878-751 kit), factory-programmed with Carrier's proprietary sequencing logic and brownout/reverse-polarity protection. Aftermarket ICM282-series clones may lack full fault-code compliance and exact timing calibration, risking nuisance lockouts or voided equipment warranties.
• Install difficulty: 3/5 — Power down and lock out the furnace at the disconnect before starting. Photograph all wiring connections and note LED blink code before removing the old board. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera. Discharge any residual voltage. The kit (325878-751) includes the board and plug harness for a clean, direct swap. Allow 30 minutes for an experienced DIYer.
• Warranty: 1-year OEM Carrier manufacturer warranty included. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier PG9MAA048080ACKA gas furnaces. Part number 325878-751 is Carrier's current active replacement for the legacy HK42FZ016 board and also supersedes HK42FZ004, HK42FZ007, HK42FZ008, HK42FZ009, HK42FZ011, and HK42FZ013. Always verify your existing board's part number on the board label before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — order now and we ship today.