OEM Carrier Integrated Furnace Control Board HK42FZ081 for Model PG80VTLA60090CAA

The Carrier HK42FZ081 Integrated Furnace Control Board is the factory-specified IFC (Integrated Furnace Control) replacement for the PG80VTLA60090CAA 80% AFUE gas furnace. This board is the central brain of the furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower through every heating cycle while continuously monitoring pressure switches, limit switches, and flame sensor inputs. When the IFC board fails, common symptoms include: the furnace entering a hard lockout with no heat, erratic or absent blower operation, ignition that never initiates, or a sequence that starts but shuts down mid-cycle with a fault code flashed on the board's LED diagnostic indicator.

• Specs: OEM Part # HK42FZ081 | Integrated Furnace Control (IFC) | 24V control circuit | Compatible with inducer, HSI igniter, single-stage gas valve, ECM/PSC blower | LED fault-code diagnostics | Factory-matched CEPL131102 board revision
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — exact firmware, terminal layout, and timing sequences matched to the PG80VTLA60090CAA. Generic aftermarket boards may vary in blower delay timing and safety lockout thresholds, risking nuisance shutdowns or reduced equipment life.
• Install difficulty: 3/5 — Requires shutting off gas and 120V power before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera (photograph all wiring harnesses before disconnecting). Note the existing board's model plug position — transfer it to the new board. Confirm all fault codes are cleared after installation.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse in original Carrier Factory Authorized Parts packaging.

Compatibility: Designed for the Carrier PG80VTLA60090CAA 80% AFUE packaged gas furnace. Also cross-references OEM successor part HK42FZ094 for units where the 081 revision is no longer available. Always verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get your furnace back online today.