OEM Carrier Furnace Control Board HK42FZ066 for Model PG96VAT48080BBAA

The Carrier HK42FZ066 Integrated Furnace Control (IFC) Board is the factory-specified replacement for the PG96VAT48080BBAA 96% AFUE gas furnace. This board serves as the central brain of the heating system — orchestrating the ignition sequence, monitoring all safety inputs (pressure switches, limit switches, flame sensor), controlling inducer and blower motor speeds, and generating diagnostic fault codes when something goes wrong. When the control board fails, common symptoms include a furnace stuck in lockout, erratic on/off cycling, a blower that runs continuously, or a system that simply produces no heat despite the thermostat calling for it.

• OEM Part Number: HK42FZ066 | Board ID: CEBD431102-04-RA | Genuine Carrier Factory Authorized Part — exact factory specifications, zero modifications required
• OEM vs Generic: OEM boards carry precise firmware and relay ratings matched to Carrier's fault-detection logic. Aftermarket boards can trigger false lockouts, misread pressure switch trips, or lack compatibility with Carrier's flash-code diagnostics — risking repeat service calls.
• Install Difficulty: 3/5 — Requires disconnecting 120V power and 24V control wiring harnesses. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone camera (photograph all wiring before removal). Label every connector. Allow 30 minutes for an experienced DIYer; recommend a certified HVAC technician for full safety verification and system startup.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Engineered for the Carrier PG96VAT48080BBAA 96% AFUE, 2-stage, variable-speed packaged gas furnace. Also cross-references Bryant and Payne models sharing the CEBD431102-04-RA board revision — verify your existing board's part number and board ID label before ordering. Note: HK42FZ066 has been superseded; the current Carrier factory replacement is HK42FZ094 — contact our team and we will confirm the correct board for your serial number range before your order ships.