OEM Carrier Integrated Furnace Control Board HK42FZ016 for Model GB1AAV024065ACJA

This is the OEM integrated furnace control board (IFC) for the Carrier GB1AAV024065ACJA gas furnace, supplied under part numbers HK42FZ016 and kit number 325878-751. The control board is the central brain of your furnace — it sequences the inducer motor, igniter, gas valve, and blower in precise timing to deliver safe, efficient heat. When the board fails, symptoms typically include a furnace stuck in lockout, failed ignition attempts with no spark or no igniter glow, erratic blower behavior, error codes flashing on the LED diagnostic light, or a system that powers on but produces no heat at all.

• Specs: OEM Carrier Integrated Furnace Control (IFC) | Part No. HK42FZ016 | Kit No. 325878-751 | 24V control circuit compatible | Factory-programmed timing sequences for Carrier GB1AAV024065ACJA — no field programming required
• OEM vs Generic: OEM control boards carry factory-calibrated ignition timing, blower delay profiles, and fault code logic matched to your specific furnace. Aftermarket boards often use generic timing that can cause nuisance lockouts, premature heat exchanger stress, or voided equipment warranties.
• Install difficulty: 3/5 — Photograph all wiring harness connections before disconnecting. Tools needed: Phillips and flat-head screwdrivers, needle-nose pliers, smartphone camera for wiring reference. Turn off power at the breaker AND shut off the gas supply before beginning. Transfer wiring harnesses one connector at a time to avoid miswiring.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse.

Compatibility: Engineered and factory-matched for the Carrier GB1AAV024065ACJA gas furnace. Always verify your existing board's part number (printed on the board label) matches HK42FZ016 or cross-references to kit 325878-751 before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you purchase — contact us before checkout.