OEM Carrier Integrated Furnace Control Board HK42FZ016 for Model PG8DAA060135ABJA

This OEM integrated furnace control board is the factory-specified replacement for the Carrier PG8DAA060135ABJA gas furnace. Sold under OEM part numbers HK42FZ016 and its current replacement designation 325878-751, this microprocessor-based board is the command center of your furnace — it sequences the inducer, igniter, gas valve, and blower motor on every call for heat. When the board fails, you may experience a complete no-heat lockout, a furnace that starts then immediately shuts down, erratic blower behavior, or a blank diagnostic LED with no fault code output. Replacing this board with a genuine OEM unit restores factory logic and timing sequences that aftermarket boards can only approximate.

• Specs: Input range 98–132 VAC at 60 Hz | Igniter output: 5A at 120 VAC | Cool Blower: 30A, 2 HP, 240 VAC | Heat blower: 5A, 1/2 HP, 240 VAC | Inducer Motor: 4A / FLA-8.0 LRA at 120 VAC | 24 VAC standard thermostat compatible | Diagnostic LED with fault code output
• OEM vs Generic: The OEM board (HK42FZ016 / 325878-751) uses factory-programmed microprocessor logic with exact ignition timing, brownout protection thresholds, and blower delay profiles matched to the PG8DAA060135ABJA. Generic ICM282-series aftermarket boards may function but lack reverse-verified factory calibration, increasing the risk of nuisance lockouts or shortened component life.
• Install difficulty: 3/5 — Photograph all wiring harness connections before removal. Discharge any residual voltage and confirm power is off at the breaker. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers, multimeter. Transfer the fault code label from the old board to the furnace door. ESD (electrostatic discharge) precautions strongly recommended — handle board by edges only.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our climate-controlled warehouse. Packed in anti-static protective packaging.

Compatibility: Direct OEM replacement for Carrier model PG8DAA060135ABJA gas furnace. Also cross-references to Bryant and Payne single-stage furnaces using the HK42FZ series boards including HK42FZ004, HK42FZ007, HK42FZ008, HK42FZ009, HK42FZ011, HK42FZ013, and HK42FZ034. Always verify your existing part number against your furnace's data plate or control board label before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your furnace back online fast.