OEM Carrier Furnace Control Board HK42FZ066 for Model PG96VAT60080CBAA

The HK42FZ066 is the factory OEM integrated furnace control (IFC) board for the Carrier PG96VAT60080CBAA 96% AFUE two-stage gas furnace. This board is the central nervous system of your heating system — it sequences the inducer motor, hot surface igniter, gas valve, and blower motor, while continuously monitoring safety inputs from pressure switches, limit switches, and the flame sensor. When this board fails, common symptoms include a furnace stuck in lockout mode, erratic ignition attempts with no heat, incorrect blower timing, or a complete loss of furnace operation with no LED fault codes displayed.

• Specs: OEM Part Number HK42FZ066 | Compatible with 96% AFUE two-stage gas furnaces | 24V control circuit | Factory-programmed timing and fault diagnostics | Onboard LED fault code indicator
• OEM vs Generic: This is a genuine Carrier OEM board, factory-programmed with the exact ignition timing, blower delay curves, and safety lockout logic required by the PG96VAT60080CBAA. Aftermarket boards may ship without pre-programming, require jumper configuration, or use off-spec timing sequences that void your equipment warranty and risk nuisance lockouts.
• Install Difficulty: 3/5 — Control board replacement requires careful wire-by-wire transfer. Tools needed: 1/4" nut driver, needle-nose pliers, phone or camera to photograph all wiring harness positions before removal. Turn off 120V power AND gas supply before starting. If LED fault codes were present, note them before powering down — they guide diagnosis.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered as the direct OEM replacement for the Carrier PG96VAT60080CBAA two-stage 80,000 BTU 96% AFUE gas furnace. Always verify your existing board's part number label before ordering to confirm fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.