OEM Carrier Integrated Furnace Control Board HK42FZ018 for Model PG9YAB048080AAAA

This is the factory OEM Integrated Furnace Control (IFC) board for the Carrier PG9YAB048080AAAA gas furnace. As the central brain of your heating system, the control board orchestrates every stage of the ignition sequence — inducer startup, hot surface ignition, gas valve activation, and blower operation — while continuously monitoring all safety switches and sensors. When this board fails, symptoms typically include the furnace going into lockout after one or more ignition attempts, erratic short-cycling, failure to energize the inducer motor, or a completely unresponsive system with no LED status codes. Replacing with the correct OEM board restores factory-programmed logic, precise timing, and full diagnostic LED functionality.

• Part Number: HK42FZ018 | Cross-references: CEPL130590-01, CEBD430590-10A | OEM Carrier factory replacement
• OEM vs Generic: This OEM board retains the exact firmware, relay ratings, and diagnostic fault-code LED sequence engineered for the PG9YAB048080AAAA. Aftermarket boards may use substitute relay specs and lack full diagnostic code parity, potentially masking underlying system faults.
• Install Difficulty: 3/5 — Requires disconnecting 120V line power and 24V control wiring. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera for wiring photos before removal. Label every connector before unplugging. Takes 30–60 minutes for an experienced DIYer or technician.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier model PG9YAB048080AAAA packaged gas furnace. Also fits select Carrier, Bryant, and Payne furnace models that share the HK42FZ018 board specification — verify your existing board's part number against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy. Order now — in stock and ships today.