OEM Carrier Integrated Furnace Control Board HK42FZ016 / 325878-751 for Model PG9MAA048080AAKA

This is the OEM-specified integrated furnace control (IFC) board for the Carrier PG9MAA048080AAKA gas furnace. The IFC board is the brain of your heating system — it sequences the inducer motor, hot surface igniter, gas valve, and blower motor in precise order on every call for heat. When this board fails, symptoms range from a complete no-heat lockout and a continuously blinking fault LED to erratic blower behavior, ignition failure after the inducer proves, or a furnace that starts and immediately shuts down. OEM part number HK42FZ016 has been superseded by the updated kit 325878-751, which includes plug-and-play adapter harnesses for seamless installation on both legacy and current wiring harness configurations.

• OEM Part Numbers: HK42FZ016 (original) | 325878-751 (current superseding kit) | Also cross-references: CEPL130438-01, CEBD430438-09A, 1012-940-M
• Key Specs: Input voltage range: 98–132 VAC @ 60 Hz | Igniter output: 5A @ 120 VAC | Cool blower: 30A, 2 HP, 240 VAC | Heat blower: 5A, 1/2 HP, 240 VAC | Inducer motor: 4A, FLA-8.0 LRA @ 120 VAC | Gas valve: 24 VAC | Diagnostic LED fault codes included | Compatible with 24 VAC standard thermostat
• OEM vs. Generic: The OEM 325878-751 kit ships with factory-matched adapter harnesses and pre-loaded firmware calibrated to Carrier single-stage fixed-speed furnace sequences, including 100% gas shutoff on ignition failure. Generic aftermarket ICM282-series boards may omit harness adapters and can exhibit timing drift on inducer pre-purge and blower-off delay settings — shortening heat exchanger life over time.
• Install Difficulty: 3/5 — Power off and lock out the furnace at the breaker before starting. Photograph all wiring connections before disconnecting. The 325878-751 kit includes adapter harnesses for older HK42FZ-style connectors — follow the included instruction sheet step-by-step. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, phone camera for reference photos. Recommend an ESD wrist strap when handling the board.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Factory-specified replacement for Carrier model PG9MAA048080AAKA single-stage gas furnace. The 325878-751 kit also cross-applies to Carrier, Bryant, and Payne fixed-speed furnaces previously using the HK42FZ004, HK42FZ007, HK42FZ008, HK42FZ009, HK42FZ011, HK42FZ013, and HK42FZ034 boards. Always verify your original part number from the furnace data plate or existing board label before ordering. Have questions about fitment? Our HVAC parts team confirms compatibility before you buy — ships today.