OEM Carrier Integrated Furnace Control Board HK42FZ034 for Model PG8JAA048090AEJA

This is the genuine OEM Carrier Integrated Furnace Control (IFC) Board, part number HK42FZ034, factory-specified for the Carrier PG8JAA048090AEJA gas furnace. The control board is the brain of your furnace — it sequences every stage of operation including inducer startup, ignition, gas valve energization, blower timing, and continuous monitoring of all safety switches and sensors. When this board fails, symptoms typically include a complete no-heat lockout, erratic ignition cycling, the furnace starting and then shutting down mid-cycle, failure to energize the blower after a call for heat, or a steady fault LED code with no recovery. If all individual components (igniter, flame sensor, pressure switch, limits) test good but the furnace still won't run correctly, the IFC board is the next logical diagnosis.

• OEM Part Number: HK42FZ034 | Board reference numbers: CEPL131012-01 / CEBD431012-01A | Factory-direct Carrier replacement — no modifications required
• OEM vs Generic: OEM boards carry factory-programmed timing sequences and fault logic exactly matched to your furnace. Aftermarket boards may use generic timing that causes nuisance lockouts, premature shutdowns, or improper blower delays — shortening heat exchanger life and voiding manufacturer warranties.
• Install Difficulty: 3/5 — Requires shutting off gas and 120V power at the disconnect before beginning. Photograph all wiring harness connections before removal. Tools needed: 1/4" nut driver, flat-head screwdriver, needle-nose pliers, phone or camera for documentation. Always check for a blown low-voltage fuse on the old board before powering up the new one.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our climate-controlled warehouse.

Compatibility: Designed as the direct OEM replacement for the Carrier PG8JAA048090AEJA gas furnace. Also cross-references part numbers HK42FZ013, CEPL130438-01, and board assembly CEBD431012-01A. Verify your existing board's part number against your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — reach out via chat or phone for fast answers.