OEM Carrier Integrated Furnace Control Board HK42FZ034 for Model PG8MAA066135AFJA

This is the factory OEM Integrated Furnace Control (IFC) board for the Carrier PG8MAA066135AFJA gas furnace, carrying Carrier part number HK42FZ034 (also cross-referenced as CEPL131012-01 / CEBD431012-01A). The IFC board is the operational brain of your furnace — it sequences ignition, manages the inducer and blower motors, monitors all safety switches and pressure circuits, and executes every heating call from the thermostat. When this board fails, symptoms range from a furnace that refuses to fire, to random mid-cycle lockouts, error code flashes on the LED diagnostic indicator, or a blower that runs continuously or not at all.

• Part Number: HK42FZ034 | Cross-ref: CEPL131012-01, CEBD431012-01A | Factory Authorized Carrier replacement
• OEM vs Generic: OEM boards are manufactured to exact Carrier voltage, timing, and sequencing tolerances. Aftermarket substitutes frequently mistime ignition sequences or misread pressure-switch signals, causing nuisance lockouts and premature component wear.
• Install Difficulty: 3/5 — Disconnect power and gas before servicing. Document all wiring connector positions (photo recommended). Tools needed: ¼" nut driver, needle-nose pliers, multimeter. Note any active fault codes from the LED before removal — they aid diagnosis. A trained HVAC technician is recommended.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG8MAA066135AFJA gas furnace. Also fits a broad range of Carrier, Bryant, and Payne furnaces using the HK42FZ034 / CEPL131012-01 board specification — verify your existing board's part number against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase.