OEM Carrier Integrated Furnace Control Board HK42FZ016 for Model GB1AAV024045AEJA

This is the OEM integrated furnace control board (IFC) factory-specified for the Carrier GB1AAV024045AEJA gas furnace. The control board is the brain of your heating system — it sequences the inducer motor, igniter, gas valve, and blower in precise timing to deliver safe, efficient heat. When this board fails, symptoms range from a furnace that won't light, repeated ignition lockouts, erratic blower behavior, or a system that powers on but never produces heat. OEM part numbers HK42FZ016 and kit designation 325878-751 are direct replacements for this unit.

• Specs: Integrated furnace control (IFC) board | Compatible with 24V control circuit | Manages ignition sequence, flame sensing, and blower timing | Includes diagnostic LED fault codes for faster troubleshooting | Replaces OEM part numbers HK42FZ016 and 325878-751
• OEM vs Generic: This OEM board is manufactured to exact Carrier factory specifications, ensuring correct timing delays, fault code behavior, and terminal pinouts. Aftermarket boards may use different timing profiles that cause nuisance lockouts, void equipment warranties, or fail prematurely under load.
• Install difficulty: 3/5 — Discharge any stored voltage before handling. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections before removal. Label each connector. Confirm gas is off before beginning. If fault codes are present, record them prior to board removal for diagnostic reference.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled parts warehouse.

Compatibility: Designed for the Carrier GB1AAV024045AEJA gas furnace. Always verify your existing board's part number (located on a label affixed to the board itself) matches HK42FZ016 or 325878-751 before ordering. If you have questions about fitment or need help cross-referencing your board, our HVAC parts specialists are available to verify compatibility before you buy — no guesswork, no return hassle.