OEM Carrier Integrated Furnace Control Board HK42FZ034 for Model PG8JAA024045AEJA

The Carrier HK42FZ034 Integrated Furnace Control (IFC) Board is the factory-specified replacement for the PG8JAA024045AEJA gas furnace. This board is the operational brain of your unit — it sequences the inducer, igniter, gas valve, and blower motor in precise order, while continuously monitoring safety switches, pressure switches, and flame sensors. When this board fails, symptoms typically include a furnace that won't light, goes into hard lockout, shuts down mid-cycle, loses communication with the thermostat, or displays fault codes such as blinking LED error sequences. Random short-cycling, a fan that runs continuously, or a furnace that simply does nothing when heat is called for are all classic signs of IFC board failure.

• Specs: OEM Part # HK42FZ034 | Board References: CEPL131012-01 / CEBD431012-01A | Single-stage HSI furnace control | 24V control circuit | Integrated LED fault-code diagnostics
• OEM vs Generic: This is a genuine Carrier OEM board manufactured to exact factory tolerances. Aftermarket substitutes may lack proper timing sequences, LED fault-code logic, or terminal compatibility — leading to repeat failures, nuisance lockouts, or voided equipment warranties.
• Install Difficulty: 3/5 — Intermediate skill recommended. Tools needed: #2 Phillips screwdriver, 1/4" nut driver, needle-nose pliers, multimeter, phone/camera for wiring documentation. Label all wire terminals before disconnecting, power down and lock out the furnace at the breaker, and verify 24V control circuit integrity before powering up. Consult the unit's wiring diagram located inside the blower compartment door.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse — stocked and ready.

Compatibility: Engineered for the Carrier PG8JAA024045AEJA gas furnace. Also cross-references Carrier Bryant and Payne units using board references CEPL131012-01 and CEBD431012-01A — verify your board reference number on the original board's label before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you purchase. Order now and ship today.