OEM Carrier Furnace Control Board HK42FZ066 for Model PG96VAT60080CCAA

This is the OEM Carrier integrated furnace control (IFC) board, part number HK42FZ066, factory-specified for the Carrier PG96VAT60080CCAA 96% AFUE two-stage gas furnace. The control board is the brain of your furnace — it sequences every heating cycle, monitors safety inputs from the pressure switch, flame sensor, and limit switches, manages inducer and blower motor timing, and generates diagnostic fault codes when something goes wrong. When this board fails, you may experience a complete no-heat lockout, repeated ignition attempts with no flame establishment, erratic blower behavior, or a board that simply powers off mid-cycle with no fault code output.

• Part Number & Specs: OEM Part # HK42FZ066 (superseded by HK42FZ094) | 24V control circuit | Compatible with single- and two-stage gas valve configurations | Onboard LED fault-code diagnostics | Factory board number CEBD431102-04-RA
• OEM vs Generic: This is a genuine Carrier Factory Authorized Parts control board — not an aftermarket clone. OEM boards carry pre-programmed timing sequences calibrated to your specific furnace model, ensuring proper ignition trial timing, blower off-delay, and safety lockout thresholds. Aftermarket boards frequently exhibit mistimed sequences that stress igniters and shorten heat exchanger life.
• Install Difficulty: 4/5 — This is an intermediate-to-advanced repair. Tools required: #2 Phillips and flathead screwdrivers, needle-nose pliers, smartphone or camera for wiring documentation, and a multimeter for pre/post-install voltage verification. Always disconnect power at the breaker AND set the furnace switch to OFF before beginning. Photograph all wiring harness connections before removal. Static discharge precautions (anti-static wrist strap) are strongly recommended.
• Warranty: 1-year OEM manufacturer warranty from date of purchase. Ships same business day from our warehouse when ordered before cutoff.

Compatibility Note: Designed for the Carrier PG96VAT60080CCAA 96% AFUE two-stage gas furnace. Note that OEM part HK42FZ066 has been superseded by HK42FZ094 — both are genuine Carrier OEM boards and fulfill the same factory specification for this model. Always verify your existing board's part number on the board label before ordering. Our fitment team is available to confirm compatibility before you purchase — no heat, no wait.